Saturday
April 19, 2014

Search: The equilibrium constant for the reaction is at 300 . Pure is placed in a 1.00- flask and allowed to reach equilibrium at this temperature. There are 1.05 in the equilibrium mixture

Number of results: 36,923

Chemistry
One enzyme- catalyzed reaction in a biochemical cycle has an equilibrium constant (K1) that is 10 times the equilibrium constant (K2) of a second reaction. If the standard Gibbs energy of the former reaction is - 300 kJ mol-1, what is the standard reaction Gibbs energy of the ...
Tuesday, April 10, 2012 at 8:29am by harry

Chemstry
For the reaction A(g) + B(g) <==> C(g) + D(g) the equilibrium constant K is defined as K = Y(sub y) * Y(sub D) / (Y (sub A) * Y(sub b)) where y is the molar fraction of the gas phase of a species At 620.00 K, the equilibrium constant is 1.100. Suppose the feed to a ...
Wednesday, July 11, 2012 at 12:32am by Simon

CHEMISTRY
The equilibrium constant KP for the following reaction is 4 atm^2 at 300 K. AB(s) ---> A(g) + B(g) What is the equilibrium pressure of A(g) and B(g) above AB(s) at 300 K? What is KC at 300K?
Sunday, March 18, 2012 at 5:05pm by Wendy

Chemistry
At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3. At this temperature, 0.300 mol of H2 and 0.300 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present at equilibrium?
Saturday, January 19, 2013 at 4:49pm by Paul

Chemistry
SO this is my first time doing this... lol i need help on an AP chemistry question for equilibrium. A 0.500 L tank contains 3.00 g of NO(g) at 750. K. The equilibrium constant for the reaction below at this temperature is 3.4 x 10 -3 2NO(g) ⇌ N2(g) + O2(g) (a) write the ...
Monday, April 9, 2012 at 8:56pm by Sam

Chemistory
The reaction has an equilibrium constant of = 0.154. If 6.60 of , 4.30 of , and 11.60 of are added to a reaction vessel with a volume of 5.30 , what net reaction will occur? A-The reaction will proceed to the left to establish equilibrium. B-The reaction will proceed to the ...
Thursday, April 18, 2013 at 2:12pm by Anonymous

Chemistry
At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3. H2(g)+I2(g) <-> 2HI(g) At this temperature, 0.300 mol of H2 and 0.300 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present at equilibrium?
Monday, March 25, 2013 at 9:36am by Anonymous

chemistry
Concerning the following reaction at equilibrium: 3Fe(s) + 4H2O(g) Fe3O4(s) + 4H2(g), increasing the concentration of the Fe(s) would: Answer A. Shift the equilibrium to the right B. Shift the equilibrium to the left C. No change D. Increase the value of the equilibrium ...
Saturday, July 21, 2012 at 11:21pm by ken

chemistry
given the equilibrium constant for the following reaction at 500 K, 2 NO (g) + O2 (g) <==> 2 NO2 (g) Kc = 6.2x10^5 calculate the equilibrium constant for the reaction expressed as partial pressures, Kp. the answer is 1.51x10^4. How do i get this?
Wednesday, March 28, 2012 at 5:00pm by alex

chem
Given the concentrations, calculate the equilibrium constant for this reaction: I2(g) + Cl2(g)---> 2ICl(g) At equilibrium, the molar concentrations for reactants and products are found to be I2 = 0.50M, Cl2 = 0.60M, and ICl = 5.0M. What is the equilibrium constant (Kc) for ...
Wednesday, November 14, 2012 at 3:24pm by byke

CHEMISTRY
the equilibrium composition of a reaction is 1.522mol CO, 1.566mol H2, 0.478mol CH4 and 0.478mol H2O and the volume of the reaction vessel is 10Litres. -What is the equation for the reaction? -Calculate the equilibrium constant for both the forward and reverse reaction?
Tuesday, April 5, 2011 at 4:03am by Taynell

chemistry
For the following reaction, 2SO3(g) = 2SO2(g) + O2(g), the equilibrium constant, Kp, is 1.32 at 627 degrees Celsius. What is the equilibrium constant for the reaction: SO3(g) = SO2(g)+ 1/2 O2(g)
Sunday, July 22, 2012 at 7:14pm by Erka

chemistry
For reactions in solution, molar concentrations are usually used in equilibrium constant expressions (designated by K or Kc). In gases, partial pressures can also be used (designated by Kp). Equilibrium partial pressures of NOCl, NO and Cl2 in a container at 300 K are 1.2 atm...
Wednesday, April 10, 2013 at 9:31am by alex

Idontgetit
The value of the equilibrium constant, Kc, at a certain temperature is 2.50 x 102. If the reaction quotient for a mixture of these species at the same temperature is found to be 7.37 x 100, would the mixture yield more products, more reactants or is it at or near equilibrium? ...
Wednesday, October 2, 2013 at 3:46pm by Chemistry

chemistry
For the reaction at equilibrium: 3Fe(s) + 4H2O(g) Fe3O4(s) + 4H2(g), removing some of the product, Fe3O4(s), would: Answer A. Increase the value of the equilibrium constant, K B. No change C. Decrease the value of the equilibrium constant, K D. Shift the equilibrium to the ...
Saturday, July 21, 2012 at 11:21pm by ken

Chemistry
The equilibrium constant Kc for the following reaction is equal to 0.20 at 250C. Calculate the equilibrium constant Kp for the reverse reaction at the same temperature. COCl2 (g) = CO (g) + Cl2 (g) My Answer: To find the reverse reaction of Kc, it should be 1/0.2 = 5, so the ...
Sunday, March 18, 2012 at 10:16pm by Raskin

Chem Class
The equilibrium constant for reaction 1 is K.....? how do i figure out problems like this? do i check which ones cancel out? The equilibrium constant for reaction 1 is K. The equilibrium constant for reaction 2 is ___? (1) SO2 (g) + (1/2) O2 (g) (right and left arrows)SO3 (g...
Monday, October 25, 2010 at 6:59pm by Awr

Chemistry
At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3. H2(g)+I2(g) <--> 2HI(g) Kc= 53.3 At this temperature, 0.300 mol of H2 and 0.300 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present at equilibrium? HI...
Friday, March 8, 2013 at 10:38pm by Lisa

Chem II
The equilibrium constant of a reaction is 12.6. If the rate constant of the reverse reaction is 5.1 x 10 -2 the rate constant for the forward reaction is _____ 0.32 0.16 0.64 0.08 I don't even know where to start on this question. Any direction will help
Monday, June 16, 2008 at 9:57pm by Ken

Idontgetit
The value of the equilibrium constant, Kc, at a certain temperature is 2.56 x 10-1. If the reaction quotient for a mixture of these species at the same temperature is found to be 9.90 x 10-4, would the mixture yield more products, more reactants or is it at or near equilibrium...
Wednesday, October 2, 2013 at 3:45pm by Chemistry

Idontgetit
The value of the equilibrium constant, Kc, at a certain temperature is 2.56 x 10-1. If the reaction quotient for a mixture of these species at the same temperature is found to be 9.90 x 10-4, would the mixture yield more products, more reactants or is it at or near equilibrium...
Wednesday, October 2, 2013 at 3:48pm by Chemistry

chemistry
the equilibrium constant is the ration of product concentration to reactant concentration at equilibrium. a reaction will likely go to completion if the equilibrium constant is what?
Saturday, January 22, 2011 at 9:37am by brandi

Chemistry chemical equilibrium
1.25 mol of NOCl was placed in a 2.50 L reaction chamber at 427 celciciu degre . After equilibrium was reached, 1.1 mole of NOCl remained. Calculate the equilibrium constant Kc for the reaction
Saturday, February 18, 2012 at 2:50am by Abdela

Chemistry
Consider the rxn during the Haber Process: N2 + 3H2 ---> 2NH3 The equilibrium constant is 3.9 x 10^(5) at 300 K and 1.2 x 10^(-1) at 500 K. Find Delta H reaction and Delta S for reaction
Monday, July 18, 2011 at 9:50am by Tyler

Chemistry!!!
Consider the rxn during the Haber Process: N2 + 3H2 ---> 2NH3 The equilibrium constant is 3.9 x 10^(5) at 300 K and 1.2 x 10^(-1) at 500 K. Find Delta H reaction and Delta S for reaction
Friday, April 20, 2012 at 6:57pm by John

Inorganic chemistry
The standard free energy change for a chemical reaction is -18.3kJ/mole. What is the equilibrium constant for the reaction at 87 degrees Celsius? (R=8.314J/K*mol) Delta G = -Rtlnk -18,300/8.314/360 = -6.114
Tuesday, May 12, 2009 at 6:35am by Steve

chemistry
If the equilibrium constant for the conversion of isobutane to n-butane is 2.5 what is the value of the equilibrium constant for the reverese reaction?
Tuesday, April 1, 2008 at 3:29am by Jennifer

chem
a.) At equilibrium, the molar concentrations for reactants and products are found to be [I2] = 0.50 M,[Cl2] = 0.60 M, and [ICl] = 5.0 M. What is the equilibrium constant (Kc) for this reaction? b.) The concentration of I2 is increased to 1.5 M, disrupting equilibrium. ...
Monday, November 19, 2012 at 12:26pm by Tracy

Chemistry
Need help in AP chemistry on Equilibrium When heated, hydrogen sulfide gas decomposes according to the equation 2 H2S(g) ⇄ 2 H2(g) + S2(g) A 3.40 g sample of H2S(g) is introduced into an evacuated rigid 1.25 L container. The sealed container is heated to 483 K, and 3.72 ...
Monday, April 9, 2012 at 8:58pm by Sam

chem
When the concentration of I2 is increased to 1.5 M, the ratio of products to reactants is 28. The equilibrium constant for the reaction is 83. In which direction will the reaction shift to regain equilibrium?
Monday, November 19, 2012 at 4:55pm by tracy

chem
For the equilibrium reaction: CO(g)+H2O(g)<=>CO2(g)+H2(g) the Keq value at 690C is 10.0. A mixture of 0.300 mol of CO, 0.300 mol of H2O, 0.500 mol of CO2 and 0.500 mol of H2 is placed in a 1.0 L flask. a)Write the Keq expression for this reaction and use the ...
Thursday, January 26, 2012 at 11:05pm by ami

CHEM
For the equilibrium reaction Co(g)+H2O(g)<=>CO2(g)+H2(g) the Keq value at 690C is 10.0. A mixture of 0.300 mol of CO, 0.300 mol of H2O, 0.500 mol of CO2 and 0.500 mol of H2 is placed in a 1.0 L flask. a) Write the Keq expression for this reaction and use the ...
Friday, January 27, 2012 at 11:51am by AMI

science
For the reaction mc011-1.jpg at 472C equilibrium is established when [H2] =0.0200M, [N2] = 0.0100M and [NH3] = 5.37 x 10-8M. What is the equilibrium constant for this reaction
Monday, November 25, 2013 at 3:04am by mike

Chemistry
A catalyst changes the rate of a reaction because it lowers the activation energy of the reaction and makes alternative pathways available. But it does not change Keq, the equilibrium constant, because it doesn't change the concn of the products or the reactants. It just helps...
Wednesday, April 9, 2008 at 10:27pm by DrBob222

Chemistry
For the reversible, one-step reaction A + B ARROW C + D, the forward rate constant is 35.9 1/(Mh) and the rate constant for the reverse reaction is 25.4 1/(Mh). The activation energy was found to be 33.0 kJ/mol for the forward reaction and 45.6 kJ/mol for the reverse ...
Wednesday, June 13, 2012 at 9:50pm by parker

Science
The following reaction: 2SO3 (g) ! 2SO2 (g) + O2 (g) has an equilibrium constant equal to 0.23 M. If the following concentrations are present: [SO2] =0.480 M, [O2] = 0.561 M, [SO3] = 0.220 M, is the reaction at equilibrium? If not, which way must it shift to reach equilibrium?
Thursday, June 30, 2011 at 11:15pm by Abby

Chemistry
3. Calculate the amount of isopentyl acetate that should be present in the reaction mixture at equilibrium based on 300 mmol of acetic acid and 150 mmol of isopentyl alcohol as starting quantities. Use equilibrium constant of 4.2 for this calculation. Moles can be used in ...
Sunday, September 30, 2012 at 6:01pm by Sdon

chemistry
A catalyst changes the RATE of a reaction, because it allows an alternative pathway for the reaaction to take place. Therefore, the reaction you have written may reach equilibrium faster, due to this increased rate; however, Keq (the equilibrium constant) remains the same and ...
Thursday, December 6, 2007 at 3:31pm by DrBob222

Chemistry
A mixture initially contains A,B, and C in the following concentrations: A1 = 0.300 M, B1 = 1.15M, and C1 = 0.350 M. The following reaction occurs and equilibrium is established: A+2B <---> C At equilibrium, A2 = 0.190M and C2 = 0.460M. Calculate the value of the ...
Thursday, February 5, 2009 at 9:55pm by Saira

Chemistry
8. For the reaction H2(g)+I2(g)\2HI(g); [H2] = 0.95 M; [I2] = 0.78 M; [HI] = 0.27 M. Calculate the equilibrium constant K and describe the direction (forward or reverse) of the reaction. Will adding a catalyst to the reaction alter the direction of the reaction? Why? Describe...
Monday, March 29, 2010 at 11:48am by Kathleen

chemistry
Determine the expression for the equilibrium constant for this equilibrium reaction: 2NO(g) + 2CO(g) (arrows)(in equilibrium with) N2(g) + 2CO2(g) PLease help anyone i really apreciate it Beccy
Saturday, January 8, 2011 at 8:35am by rebecca niles

chemistry
I am given the following reaction: 2NH3(g) -------> N2(g) + 3H2(g) My question is: 6.4 mols of ammonia gas has been put into a 1.7 L flask and has been permitted to reach equilibrium in accordance to the reaction listed above. If the equilibrium mixture has 4.2 mols of ...
Monday, May 26, 2008 at 12:19pm by ChemTeach

chemistry
I am given the following reaction: 2NH3(g) -------> N2(g) + 3H2(g) My question is: 6.4 mols of ammonia gas has been put into a 1.7 L flask and has been permitted to reach equilibrium in accordance to the reaction listed above. If the equilibrium mixture has 4.2 mols of ...
Monday, May 26, 2008 at 7:17pm by Shivani

Chemistry
A chemist trying to synthesize a particular compound attempts two different synthesis reactions. The equilibrium constants for the two reactions are 23.3 and 2.2 X 10^4 at room temp. However, after 15minutes the chemist finds that the reaction with the smaller equilibrium ...
Wednesday, February 8, 2012 at 12:10am by L.Bianchessi

Chemistry
The equilibrium constant, Kc is 3.2 x10 -34 at 25C for the reaction 2 HCl(g) <=> H2(g) + Cl2(g). what is The equilibrium expression, Kc for the reaction
Wednesday, April 27, 2011 at 5:26pm by Donna

Chemistry
For the reaction 2NH3(g) 3H2(g) N2(g) at 472oC equilibrium is established when [H2] =0.0200M, [N2] = 0.0100M and [NH3] = 5.37x10^_8 M. What is the equilibrium constant for the reverse reaction?
Monday, July 16, 2012 at 12:58pm by joe

Chemistry
Consider the reaction A+B->C+3D. A solution was prepared by mixing 50 ml of .001 M of A, 100 ml of .002 M of B, 10 ml of 1 M of C, and 75 ml of .0015 M of D. At equilibrium, the concentration of D was measured and found to be .0006 M. Calculate the equilibrium ...
Sunday, January 26, 2014 at 3:10pm by Anonymous

general science
Reactants --> Products {True} products = reactants {True} If atoms cannot be destroyed then the mass of reactants must equal the mass of the products in a chemical reaction Some chemical and physical changes can reach equilibrium. At equilibrium the rate of the forward ...
Thursday, December 24, 2009 at 11:42am by Heart

chemistry
A classic experiment in equilibrium studies dating from 1862 involved the reaction in solution of ethanol and acetic acid to produce ethyl acetate and water. The reaction can be followed by analyzing the equilibrium mixture for its acetic acid content. In one experiment, a ...
Sunday, March 13, 2011 at 5:44am by gs

chem
Reaction H2 +I2 yields 2HI All three gases are initially at 0.1atm/ upon reaching equilibrium it is found that H2 pressure droped by 55% what is the equilibrium constant for this reaction.
Sunday, December 26, 2010 at 6:07pm by Anonymous

chem 221 #3
during the preparation of synthetic banana oil lab. Calculate the amount of isopentyl acetate that should be present in the reaction mixture at equilibrium based on 300 mmol of acetic acid and 150 mmol of isopentyl alcohol as starting quantities. Use equilibrium constant of 4....
Wednesday, February 27, 2013 at 6:48pm by Jazzmine

chemistry
the standard free energies of formation of SO2(g) and SO3(g) are -300.4 and -370.4kJ mol-1 respectively. Calculate the value of the equilibrium constant at 25'C for the reaction 2SO2(g)+O2(g)==>2SO3(g)
Tuesday, February 12, 2013 at 9:37pm by harry

chemistry
The equilibrium constant Kc for the reaction C <--> D + E is 7.90 * 10^-5. The initial composition of the reaction mixture is [C]=[D]=[E]=1.10*10^-3. What is the equilibrium concentrations of C, D, and E? C=? D=? E=?
Sunday, November 4, 2012 at 10:51pm by Brunette

Chemistry
At the start of the reaction there are 0.714 mole of H2, 0.984 mole of I2, and 0.886 mole of HI in a 2.70 L reaction chamber. Calculate the concentrations of the gases at equilibrium. The equilibrium constant is 54.3.
Saturday, February 23, 2013 at 7:03pm by Amy

Chemistry(Please check answer)
The equilibrium constant for the reaction, H2(g) + I2(g) == 2 HI(g) is 54.9 at 699.0 K (Kelvin). What is the equilibrium constant for 4 HI(g) == 2 H2(g) + 2 I2(g) under the same conditions? Note: the == indicates the equilibrium double arrow Since the second equation is ...
Wednesday, March 14, 2012 at 8:30pm by Hannah

chemistry
The correct interpretation of the equation below is: Fe3+(aq) + SCN(aq) --> FeSCN2+(aq) A. At equilibrium, the rate of the forward reaction equals the rate of the reverse reaction. B. The equilibrium constant is Kc = [Fe3+][SCN][FeSCN2+] C. A heterogeneous equilibrium ...
Thursday, April 10, 2008 at 1:49am by Jerome

chemistry
The correct interpretation of the equation below is: Fe3+(aq) + SCN(aq) --> and <-- FeSCN2+(aq) A. A heterogeneous equilibrium exists because of the charged ions. B. At equilibrium, the rate of the forward reaction equals the rate of the reverse reaction. C. The ...
Wednesday, April 9, 2008 at 3:12pm by Lindsey

Chemistry
In the industrial synthesis of ammonia, the equilibrium constant expression may be written as: Keq= [NH3]^2/[N2][H2]^3 Calculate the value of this equilibrium constant, if the equilibrium concentration of nitrogen in the reaction mixture at 600C if [N2] = 4.53 and [H2] = 2.49...
Friday, November 18, 2011 at 12:24am by Chemistry Chick

chemistry
Write an equilibrium constant expression for the chemical reaction of ammonia with water. (In this reaction assume that the concentration of water will remain constant)
Saturday, June 12, 2010 at 11:09pm by Locke

chem
1) If more reactant is added to a gaseous reaction at equilibrium, what will happen to the value of the equilibrium constant? a. it will increase b. it will decrease c. it will remain the same d. it can either increase or decrease 2) Which of the following describes a property...
Wednesday, February 1, 2012 at 9:13pm by HEATHER

Chemistry
If a catalyst is added to a system at equilibrium and the temperature and pressure remain constant there will be no effect on the: (1) rate of the forward reaction (2) rate of the reverse reaction (3) activation energy of the reaction (4) heat of reaction 4, am i right ?
Wednesday, March 9, 2011 at 3:53pm by Jazmin F.

chemistry
A 2.30 mole quantity of NOCl was initially in a 1.50 L reaction chamber at 400C. After equilibrium was established, it was found that 20.0 percent of the NOCl had dissociated: 2NOCl(g) 2NO(g) + Cl2(g) Calculate the equilibrium constant Kc for the reaction.
Thursday, March 17, 2011 at 2:10am by Anonymous

chemistry
The correct interpretation of the equation below is:? Fe3+(aq) + SCNC(aq) FeSCN2+(aq) A. The reaction is incomplete because the product is still charged. B. A heterogeneous equilibrium exists because of the charged ions. C. The equilibrium constant is Kc = [Fe3+][SCNC][...
Thursday, April 10, 2008 at 9:59pm by david

Chemistry
The equilibrium constant Kp for the following reaction is 4 atm^2 at 300 K. AB(s) = A(g) + B(g) What is the equilibrium pressure of A(g) and B(g) above AB(s) at 300K? What is Kc at 300K? How would i solve this when they don't even give me any partial pressures?! All of the ...
Saturday, March 17, 2012 at 7:10pm by David

Chemistry Equilibrium Constant
The initial pressures for I2 (g), H2(g), and HI(g) were Pi2 = 0.100 atm, Ph2 = 0.200 atm, and Phi = 0 atm, respectively. After the system came to equilibrium, the pressure of I2 (g) became very low, PI2 = 1.00 x 10^-5 atm. Calculate the equilibrium constant Kp for this reaction
Sunday, March 18, 2012 at 11:15pm by Raskin

chemistry
A reaction with an equilibrium constant Kc = 1.5 x 1021 would consist of which of the following at equilibrium:
Friday, December 6, 2013 at 7:53pm by Cody

chemistry
A reaction with an equilibrium constant Kc = 1.5 x 1021 would consist of which of the following at equilibrium:
Friday, December 6, 2013 at 7:58pm by Cody

Chemistry
Consider the reaction 2 SO2 + O2 in equilibrium with 2 SO3 . At 25C Ho = -197.78 kJ and So = -187.95 J/K. Using this information, calculate the equilibrium constant for the reaction at 50C. (R = 8.314 J/K) Enter your answer using TWO significant figures.
Wednesday, April 6, 2011 at 11:53pm by Laura

chemistry reaction rate
You will need to add a catalyst. 'nic' is not correct as changing the P or concentrations will only change the position of the equilibrium. Increasing the temperature will bring the reaction to equilibrium more quickly, but will decrease the equilibrium yield as it is an ...
Sunday, January 9, 2011 at 8:52pm by Dr Russ

Chemistry 3A
An aqueous solution contains the ions B, C, and D that are in equilibrium with one another according to the reaction B (aq) + C (aq) ->/<- D (aq) A certain amount of water is added so as to double the volume of this solution, while keeping the temperature and the ...
Sunday, July 21, 2013 at 5:51pm by Sarah

chemistry
Stearic acid, nature's most common fatty acid, dimerizes when dissolved in hexane: 2C17H35COOH Picture (C17H35COOH)2; ΔHrxn = -172 kJ The equilibrium constant for this reaction at 28C is 2900. Estimate the equilibrium constant at 38C.
Thursday, March 8, 2012 at 3:27pm by lisa

apchemistry
The numerical value of the concentration equilibrium constant for the gaseous reaction 2 SO2 + O2 *) 2 SO3 is 0.5 at temperature T. When a reactionmix- ture is brought to equilibrium, [O2] is found to be 2.0 M and [SO3] is found to be 10 M. What is the equilibrium ...
Wednesday, January 30, 2013 at 5:52pm by cheri

chemistry
I, IV and V only 005 10.0 points When a chemical reaction comes to equilibrium, both the forward and the reverse reactions continue, but their rates are equal. For such a system at equilibrium at 300 K and 1.00 atm pressure, the change in Gibbs free energy as the forward ...
Friday, January 21, 2011 at 7:05pm by Bob

Chemistry
The equilibrium constant for the reaction of bromine and chlorine to form bromine chloride under certain conditions is 4.7x10-2. Cl2(g) + Br2(g) --> 2BrCl(g) K= 4.7 x 10-2 What is the equilibrium constant for the following reaction under the same conditions? 1/2 Cl2(g) + 1/...
Saturday, November 3, 2007 at 7:12pm by Dan

CHEMISTRY
Find the equilibrium constant. 1. The equilibrium constant for the reaction,! Fe3+ + SCN- ⇋ FeSCN2+ (at a specific temperature), can be determined by first preparing a standard solution of FeSCN2+ and comparing its absorbance of light to an equilibrium system of unknown ...
Tuesday, December 3, 2013 at 9:03pm by Anonymous

Gen Chem
At elevated temperatures, solid silicon reacts with chlorine gas to form gaseous SiCl4. At some temperature, the equilibrium constant for this reaction is 0.30. If the reaction is started with 0.10 mol of SiCl4 in a one-liter flask, how much Cl2 will be present when ...
Wednesday, February 29, 2012 at 10:11pm by jon

chemistry
23) The equilibrium constant for the gas phase reaction 2NH3 (g) <-> N2 (g) + 3H2 (g) is Keq = 230 at 300 C. At equilibrium, __________. A) reactants predominate B) products predominate C) only products are present D) roughly equal amounts of products and reactants are ...
Thursday, November 18, 2010 at 3:10pm by jess

Chemistry
Find the equilibrium constant. 1. The equilibrium constant for the reaction,! Fe3+ + SCN- ⇋ FeSCN2+ (at a specific temperature), can be determined by first preparing a standard solution of FeSCN2+ and comparing its absorbance of light to an equilibrium system of unknown ...
Tuesday, December 3, 2013 at 11:46pm by Anonymous

Chemistry
At a given temperature, the elementary reaction A <=> B in the forward direction is first order in A with a rate constant of 2.60 x 10^-2 s^-1. The reverse reaction is first order in B and the rate constant is 8.50 x 10^-2 s^-1. What is the value of the equilibrium ...
Monday, March 5, 2012 at 11:37pm by Jessica

AP Chemistry
For the system 2SO2(g) + O2(g) <--> 2SO3 (g), change in enthalpy is negative for the production of SO3. At a particular temperature, 8.00 moles of sulfur dioxide and 10.00 moles of sulfur trioxide are introduced into a 2.00 L container. The system is allowed to reach ...
Saturday, January 12, 2008 at 10:45pm by S

Chemistry
A student ran the following reaction in the laboratory at 651 K: 2 NH3(g) N2(g) + 3 H2(g) When she introduced 8.75E-2 moles of NH3(g) into a 1.00 Liter container, she found the equilibrium concentration of H2(g) to be 0.119 M. Calculate the equilibrium constant, Kc, she ...
Tuesday, November 19, 2013 at 10:50pm by Jessica

Chemistry
The following reaction is a step in the commercial production of sulfuric acid. 2SO2(g) + O2(g) 2SO3(g) The equilibrium constant is very high at room temperature, but the reaction is very slow. It must be run at high temperatures to achieve a reasonable rate of reaction. ...
Tuesday, October 5, 2010 at 6:35pm by Anonymous

chemistry... HELPP
Chemistry Equilibrium Constant PLEASE Help!? In an experiment, equal volumes of 0.00150 M FeCl3 and 0.00150 M NaSCN were mixed together and reacted according to the equation: Fe3+ (aq) + SCN (aq) <--> Fe(SCN)2+ (aq) The equilibrium concentration of FeSCN 2+(aq) was 2.70...
Tuesday, October 16, 2012 at 9:38pm by LS

Chemistry
Write the equilibrium constant expression, K, for the reaction.Then substitute the equilibrium pressures of SO2 and O2 and solve for SO3 partial pressure.
Monday, September 7, 2009 at 3:49pm by DrBob222

College Chemistry 2 - Equilibrium Constants/Conc.
Calculate the equilibrium constant K(eq) for the following reaction at that temperature: 2SO2 (g) + O2 (g) = 2SO3 (g)
Friday, March 4, 2011 at 7:56pm by Lynn

chemistry
for the reaction S2F6 (g) 2SF2(g), the equilibrium concentrations are as follows: [S26]=0.000430M, [SF2]=2.08 M, [F2]=1.32M. the equilibrium constant is
Sunday, November 13, 2011 at 6:21pm by karen

chemistry check my work
the equilibrium-constant expression for a reaction is kc= [N2][H2O]2 ---------- [NO]2[H2] what is the equilibrium-constant expression when the equation for this reaction is halved and then reversed? 2NO + 2H2 --> N2 + 2H2O NO + H2 ---> N + H2O N + H2O --> NO + H [NO][...
Wednesday, April 14, 2010 at 10:02pm by Anna

chemistry
Choose all of the following statements about the equilibrium constant K that are true: (a) If the K value for a reaction is > 1 then Go must be negative for this reaction (b) A large value for K implies there is a strong driver for the reaction to proceed in the forward ...
Sunday, March 28, 2010 at 4:33am by James

Chemistry
The equilibrium constant Kc for the following reaction is equal to 0.20 at 250C. Calculate the equilibrium constant Kp for the reverse reaction at the same temperature. COCl2 (g) = CO (g) + Cl2 (g) I'm sorry.. English is a second language for me. After solving for K'c and ...
Thursday, March 15, 2012 at 9:55pm by David

Chem, help please
Consider the reaction N2 + 3H2 in equilibrium with 2 NH3 . At 25C Ho = -92.22 kJ and So = -198.53 J/K. Using this information, calculate the equilibrium constant for the reaction at 226C. (R = 8.314 J/K) Enter your answer using TWO significant figures. You may use scientific...
Friday, November 19, 2010 at 10:19pm by Shayne

Pchem
2 NO2(g) N2(g) + 2 O2(g) The H for the reaction above is -66.4 kJ. The system is initially at equilibrium. What happens if NO2 is added to the reaction mixture at constant temperature and volume? (Select all that apply.) And here's the options. The reaction absorbs energy...
Wednesday, February 17, 2010 at 6:39pm by JCY

Chemistry
The free energy profile as the reaction goes from reactants to products is a straight diagonal line from 50 kj/mol to 80 kj/mol. Is the reaction exothermic or endothermic? Does the reaction involve only pure solids and liquids? Is the equilibrium constant greater than, equal ...
Friday, February 14, 2014 at 2:02pm by Anonymous

chemistry
For the reaction 2A(g) + B(aq) + 3C(l)<------> D(s) + 3E(g), the concentrations at equilibrium are found to be: A: 2.3x10^3 Pa B: 1.8x10^-2 M C: 15.8M D: 12.5M E: 5.6x10^4 Torr Find the numerical value of the equilibrium constant that would appear in a conventional table...
Sunday, March 10, 2013 at 7:20pm by Ashley

chemistry
CO2(g) + H2(g) equilibrium reaction arrow CO(g) + H2O(g) Calculate the equilibrium concentration of each compound if 2.00 moles of CO2 and 2.40 moles of H2 are placed in a 3.90 liter container at 300C. Kc = 2.30 for the reaction at this temperature. [CO2] = M [H2] = M [CO] = ...
Wednesday, December 18, 2013 at 9:36pm by Isaiah

chemistry
It's a good thing you have provided the equilibrium constant Kp for that reaction. I was not able to find it. If the mixture were at equilibrium, you would have Pcl3*Pcl2/Ppcl5 = 26 In this case, that ratio is .9*.45/.012 = 33.8 There are more products than there would be at ...
Sunday, March 9, 2008 at 3:46am by drwls

Chemistry
Consider the reaction 3X + Y ⇔ 2W + Z. At equilibrium, [X] is 7.0 M, [Y] is 6.0 M, [W] is 5.0 M and [Z] is 7.0 M at 298 K. The value of the equilibrium constant at this temperature is: a) 0.085 b) 0.560 c) 1.800 d) 11.760
Tuesday, May 15, 2012 at 12:48pm by Andrea

Chemistry
A reaction mixture of 4.0 mL of 0.002 M SCN- and 5.0 mL of 0.002 M Fe3+ is diluted to 10.0 mL with 0.1 M HNO3 to form the blood-red FeNCS2+ complex. The equilibrium molar concentration of the FeNCS2+ determined from a standardization curve is 1.5x10^-4 mol/L. Calculate, in ...
Monday, March 18, 2013 at 11:48am by Anonymous

Chemistry
Consider the following equilibrium at 1000K: 2SO2 (g) + O2 (g) 2SO3 (g) A study of this system reveals that there are 3.5E-3 moles of sulfur dioxide gas, and 4.8E-3 moles of oxygen gas present in a 11.0L flask at equilibrium. The equilibrium constant for this reaction is 4....
Sunday, June 3, 2012 at 11:03am by please help!

Chemistry
For the reaction given, the value of the equilibrium of the constant at 400 K is 7.0. Br2(g)+ Cl2(g)=2BrCl(g) Does the: Reaction proceed to the left? Reaction proceed to the right? Partial pressure represent a system in an equation?
Friday, February 21, 2014 at 10:44am by Andy

Chemistry
Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium concentration of SO2(g). 2SO2(g)+O2(g)=2SO3(g) Kc=1.7*10^8 [SO3]aq=0.0034 M [O2]aq=0.0018 M
Tuesday, December 10, 2013 at 12:22pm by Timothy urgent need

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