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April 17, 2014

Search: equilibrium

Number of results: 5,331

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
Which of the following statements is a false statement concerning characteristics of chemical equilibrium? a. Equilibrium is dynamic. b. For a specific reaction at a specific temperature, the equilibrium state will be dependent of the direction of approach to equilibrium. c. ...
Thursday, November 18, 2010 at 5:22pm by Carla

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

chm152
Consider the following equilibrium: 5.0 moles of are placed in a 10.0 L flask at 200 C and allowed to come to equilibrium. Analysis shows that 1.0 mole of is present in the equilibrium mixture. How many moles of Cl2 are present at equilibrium. Choose one answer. a. 0 b. 1.0 c...
Saturday, March 27, 2010 at 11:38am by ami

Science
A chemist is studying the following equilibrium: 2Pb(NO3)2 (s) ! 2PbO (s) + 4NO2 (g) + O2 (g) He starts out with 10 g of Pb(NO3)2 and, at equilibrium, has 2.02 g of PbO. The concentrations of NO2 and O2 at equilibrium are 0.25 M and 0.019 M, respectively. What is the value of ...
Thursday, June 30, 2011 at 11:15pm by Megan

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
An equilibrium mixture contains N2O4, (P= 0.30 ) and NO2 (P= 1.1 ) at 350 K. The volume of the container is doubled at constant temperature. Calculate the equilibrium pressure of when the system reaches a new equilibrium. Calculate the equilibrium pressure of NO2 when the ...
Thursday, May 20, 2010 at 9:42pm by Anonymous

Chemistry
Consider the equilibrium 2NOCl (g) <---> 2NO (g) + Cl2 (g). In a 1 L container @ equilibrium there are 1.0 mol NOCL, 0.70 mol NO, and 0.40 mol Cl2. @ constant temperature and volume, 0.10 mol NaCl is added. What are the concentrations in the "new" equilibrium in ...
Saturday, April 13, 2013 at 2:52pm by Anna

CHM 152
Consider the following equilibrium: PCl5 = PCl3+ Cl2 5.0 moles of are placed in a 10.0 L flask at 200 C and allowed to come to equilibrium. Analysis shows that 1.0 mole of is present in the equilibrium mixture. How many moles of are present at equilibrium. Choose one answer. ...
Friday, March 26, 2010 at 1:50pm by AMI

chemistry
following equilibrium system with a Kc of 1.23E-03: C3H6O (aq) + 2C2H6O (aq)--> C7H16O2 (aq) + 2H2O (l) 1.What is the equilibrium expression for this system? 2.If the molar concentrations of C3H6O2 and C2H6O are both 0.255 at equilibrium, what is the equilibrium ...
Sunday, April 22, 2012 at 11:45pm by cateye

Chemistry
Which of the following statements are incorrect? 1) Gases are not included in the equilibrium constant expression. 2) Equilibrium constant can be increased by adding a catalyst 3) Large equilibrium constant favors reactants 4) Equilibrium is typically achieved in a very short ...
Saturday, March 17, 2012 at 7:01pm by David

chemistry
The equilibrium constant Kp for the following equilibrium is 33 at 298 K. What is the value of Kc at this same equilibrium at 298 K
Sunday, November 4, 2012 at 10:31pm by Brun

Chemistry (conceptual question)
If you have a soln of HNO2 at equilibrium HNO2 (aq) + H20 (l) <-->H3O+ (aq) + NO2- (aq) and water is added, is there a shift in the equilibrium? Can someone explain why to me? I have a hard time understanding the concept of equilibrium and what is part of the equilibrium...
Friday, February 19, 2010 at 1:23am by Tommy

chemistry
balance:H2(g)+S2(g)------->H2S(G)+heat A.) how would the equilibrium be affected give the following: - increase in temperature - increase in hydrogen concentration - increase in reaction container of volume B.) is equilibrium homogeneus or heterogeneus? C.) what is ...
Tuesday, February 28, 2012 at 10:53pm by Mandy

Economics
Equilibrium is defined as the price at which the quantity demanded and the quantity supplied are equal. In the short run, equilibrium does not always occur. What terms describe disequilibrium? How is subsequent equilibrium re-established
Friday, July 8, 2011 at 8:00pm by alphonso

college math HELP!!!!!
i need to find equilibrium price using these two equations: P= -(1/25)x+190 P= (1/75)x+70 the equilibrium quantity is: 2250 units the equilibrium price is: ______?
Monday, January 20, 2014 at 2:34pm by Dee

Calculus
Find the consumers' surplus and the producers' surplus at the equilibrium price level for the given price-demand and price supply equations. p = D(x) = 170e^-0.001x p = S(x) = 35e^0.001x a) The value of x at the equilibrium is ___ b) The value of p at equilibrium is $___ c) ...
Wednesday, November 27, 2013 at 7:51pm by Cally

Chemistry
Consider the following equilibrium at 1000K: 2SO2 (g) + O2 (g) ¡ê 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!

PLEASE HELP Chem
1. A. equilibrium shifts to reactants agreed B. equilibrium shifts to products agreed C. equilibrium shifts to reactants agreed D. equilibrium shifts to products Reactants? 2. A. equilibrium shifts to reactants No B. equilibrium shifts to products No C. equilibrium shifts to ...
Tuesday, December 7, 2010 at 9:05am by Dr Russ

chemistry 30 concentration of a product
calculate the concentration of the products of the following equilibrium when the equilibrium constant is 12.3 and the equilibrium concentration of nobr2 is 2.17 mol/l
Tuesday, November 6, 2012 at 9:18pm by Tara

Chemistry
Consider the equilibrium 2NO (g) <---> 2NO (g) + Cl2 (g). In a 1 L container @ equilibrium there are 1.0 mol NOCL, 0.70 mol NO, and 0.40 mol Cl2. @ constant temperature and volume, 0.10 mol NaCl is added. What are the concentrations in the "new" equilibrium in comparison...
Friday, April 12, 2013 at 11:22pm by Anna

Chemistry
1) Gases are not included in the equilibrium constant expression.They are included so this is incorrect. 2) Equilibrium constant can be increased by adding a catalyst.They can not be changed by adding a catalyst so this is incorrect 3) Large equilibrium constant favors ...
Saturday, March 17, 2012 at 7:01pm by DrBob222

Chemistry
Consider the heterogeneous equilibrium process shown below. C(s) + CO2(g) 2 CO(g) At 700.°C, the total pressure of the system is found to be 3.87 atm. If the equilibrium constant KP is 1.52, calculate the equilibrium partial pressures of CO2 and CO.
Saturday, February 23, 2013 at 7:42pm by Alan

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
N2 +O2 = 2NO has an equilibrium constant Keq of 0.10 mol/L @ 2000 degrees celcius. If the equilibrium concentration for NO is 0.40 mol/L and the equilibrium concentration for N2 is 0.80 mol/L, what is the equilibrium concentration of O2?
Monday, November 10, 2008 at 4:54pm by Chernika

Chemistry
A mixture containing 0.5 mol of H2 (g) and 0.5 mol of I2 (g) was introduced into a 10L container at a temperature of 448 C. At this temperature the equilibrium constant Kp is 50. i. What is the total pressure in the container before the reaction starts and at equilibrium. ii. ...
Wednesday, December 26, 2012 at 7:24pm by Matt

Chemistry
A mixture containing 0.5 mol of H2 (g) and 0.5 mol of I2 (g) was introduced into a 10L container at a temperature of 448 C. At this temperature the equilibrium constant Kp is 50. i. What is the total pressure in the container before the reaction starts and at equilibrium. ii. ...
Wednesday, December 26, 2012 at 7:25pm by Matt

Chemistry
3.0 moles each of carbon monoxide, hydrogen, and carbon are placed in a 2.0 liter vessel and allowed to come to equilibrium according to the equation: CO(g)+H2(g)-->C(s)+H20(g) if the equilibrium constant at the temperature of the experiment is 4.0, what is the equilibrium ...
Friday, March 9, 2012 at 5:11pm by Kelly Hills

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
Given the reaction A(g) + B(g) <-> 2AB(g) 1. What does equilibrium mean? -equal mols or pressure between reactants and products? Is there more reactants or products? 2. Will the equilibrium be the same if i started with the reactants only vs if i started with the product...
Monday, April 4, 2011 at 12:10am by BlahxD

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

Chemistry
I assume you want the NO2 at equilibrium although you don't say that in the post. initial: NO2 = 849.9/(46*390) = ?? moles/L NO = 0 O2 = 0 equilibrium: O2 = not needed. NO = 248.2/(30*390) = ?? moles/L NO2 = ----- Since 2 mols NO are produce for each 2 moles NO2 initially, ...
Thursday, April 15, 2010 at 7:31pm by DrBob222

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

Physics ideal gases
If 2 samples of nitrogen (different PVTs) are separated by a conductive barrier, they will eventually achieve equilibrium, I believe. Am I right to assume that the final T and P at equilibrium in this case would be the SAME T and P if the barrier was highly insulated, then ...
Saturday, January 3, 2009 at 4:24pm by charlie

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
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
A chemist studying the equilibrium N2O4(g)<----->2NO2(g) controls the temperature so that keq ( equilibrium constant)= 0.028. At one equilibrium position, the concentration of N2O4 is 1.5 times greater than the concentration of NO2. Find the concentrations of the two ...
Tuesday, November 26, 2013 at 8:57pm by Anonymous

chem
The following reaction is used in some self-contained breathing devices as a source of O2. 4KO2(s) + 2C02(g)---> 2K2CO3(s) + 3O2(g) Suppose that a sample of CO2(g) is added to an evacuated flask containing KO2(s) and equilibrium is established. The equilibrium partial ...
Thursday, April 2, 2009 at 12:18pm by tomi

college Macroeconomics
consider a country with an economic structure consistent with the assumptions of the classical model. Suppose that businesses in this nation suddenly anticipate higher future proftability from investments they undertake today. explain whether or how this could affect the ...
Saturday, September 11, 2010 at 5:19pm by aimee

Chemistry/Equilibrium calculations
I didnt check your math, but it looks in the ballpark. Now the last: You are not in an equilibrium here, as the exhaust is flowing thru, so the addition of a catalyst will increase the amount of CO2 (:but not to the equilibrium level). Much of the exhaust will not react ...
Saturday, August 16, 2008 at 12:00pm by bobpursley

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

chemistry
I hope this will help us figure out now For questions #1 through #10, refer to the following equilibrium system, with a Kc of 1.23E-03: C3H6O (aq) + 2C2H6O(aq)----> C7H16O2 (aq) + 2H2O (l) 1. What is the equilibrium expression for this system? [C7H16O2]/ [C3H6O][C2H6O]2 2....
Monday, April 23, 2012 at 8:22am by cateye

College 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 4:19am by Timothy urgent need

chemistry
Determine the concentration at equilibrium if you start with 2.3 grams of Hydrogen and 200grams of Iodine in a 2.3 liter container. If you now add an extra .25M of HI after equilibrium, calculate Qc. Recalculate now what the concentrations should be at equilibrium. H2(g)+I2(g...
Tuesday, March 8, 2011 at 7:57am by regina

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

AP CHEMISTRY
write the equilibrium-constant expression and calculate the value of the equilibrium constant for each of the following reactions at 298 K. (a) NaHCO3(s)<--> NaOH(s) + CO2(g) Answer: Keq = PCO2 (b)Value of the Equilibrium Constant: Please help me find B
Monday, March 19, 2012 at 7:34pm by DAN

chem help!
The equilibrium constant, Kc, for the equilibrium N2O4(g)←→2NO2(g) is 4.6×10−3 . If the equilibrium mixture contains 5.0×10−2M NO2, what is the concentration of N2O4?
Sunday, July 28, 2013 at 10:32pm by Anonymous

Chemistry
Please show step by step with answer The equilibrium constant, Kc, for the equilibrium N2O4 (g) <---> 2NO2(g) is 4.6 x 10^-3 If the equilibrium mixture contains 4.0×10^-2 M NO2, what is the concentration of N2O4?
Monday, May 31, 2010 at 3:46pm by Lynn

Chemistry 2
Supposed you stoppered the flasks after your titration to determine the equilibrium constant and kept the solutions for another day so that the equilibrium was re-established. What would happen to the amount of ethanol present? What would be the relationship of the original ...
Friday, August 3, 2012 at 12:42pm by Robert

chem
PCL5=PCl3+Cl2 a. Initially 0.72 mole PCl5 are placed in 1.50 L flask. At equilibrium, there is 0.16 mole PCl3 in the flask. What is the equilibrium concentration of the PCl5? b. What is the equilibrium concentration of the Cl2? c.What is the equilibrium constant for the ...
Monday, November 19, 2012 at 1:44pm by chemdummy79

chm152
PCL5(g)=PCL3(g)+CL2(g) 5.0 moles of are placed in a 10.0 L flask at 200 C and allowed to come to equilibrium. Analysis shows that 1.0 mole of is present in the equilibrium mixture. How many moles of Cl2 are present at equilibrium. Choose one answer. a. 0 b. 1.0 c. 2.0 d. 3.0 ...
Saturday, March 27, 2010 at 11:38am by ami

chm152
PCL5(g)=PCL3(g)+CL2(g) 5.0 moles ofWHAT are placed in a 10.0 L flask at 200 C and allowed to come to equilibrium. Analysis shows that 1.0 mole of WHAT is present in the equilibrium mixture. How many moles of Cl2 are present at equilibrium. Choose one answer.
Saturday, March 27, 2010 at 11:38am by DrBob222

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
For the following reaction at a certain temperature, it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2] = 0.0500 M, [F2] = 0.0100 M, and [HF] = 0.400 M. If 0.261 mol of F2 is added to this equilibrium mixture, calculate the concentrations of ...
Friday, November 13, 2009 at 11:32pm by Meghan

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
please help and explain. At a certain temperature, Keq = 10.5 for the equilibrium below. CO(g) + 2 H2(g) equilibrium reaction arrow CH3OH(g) Calculate the following concentrations. (b) [H2] in an equilibrium mixture containing 1.01 mol/L CO and 0.335 mol/L CH3OH
Monday, March 11, 2013 at 3:46pm by Julia

college chemistry
For the equilibrium Br2 + Cl2 goes to 2BrCl at 400 K ,Kc = 7.0. 0.30 of Br2 and 0.30 of Cl2 are introduced into a 1.0 L- container at 400 K.a) What will be the equilibrium concentration of Br2? b) What will be the equilibrium concentration of Cl2 ? c) What will be the ...
Friday, October 7, 2011 at 4:11am by erika

Chemistry
Write the equation for the equilibrium that exists when nitrous acid and sodium acetate are placed in solution together (do not include spectator ions). Using published values for the Ka of nitrous acid and of acetic acid, determine the numerical value of the equilibrium ...
Wednesday, April 4, 2012 at 9:34pm by chamy

Economics
1. Suppose there is a stock market crash in Japan. Using a well-labeled graph show the effect in the short run on the equilibrium price level in the U.S.A., equilibrium Real GDP in the Unites States of America, equilibrium unemployment rate in the Unites States of America? My ...
Monday, April 2, 2007 at 11:34pm by Sarah

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 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

Chemistry
At 2000°C, 5.0×10-3 mol CO2 is introduced into a 1.0 L container and the following reaction comes to equilibrium: 2CO2(g) <-> 2CO(g) + O2(g) Kc = 6.4×10-7 a. Calculate the equilibrium concentrations of CO and O2. b. What fraction of the CO2 is decomposed at equilibrium...
Monday, October 18, 2010 at 5:58pm by mg

chemistry
Ammonia reacts with oxygen in the presence of a platinum catalyst to give nitric oxide and water, according to the following gas phase equilibrium: 4NH_3(g) + 5O_2(g) <---> 4NO(g) + 6H_2O(g) ÄH = −906 kJ mol^−1 What is an appropriate equilibrium expression ...
Saturday, January 3, 2009 at 7:32pm by trigger

Economics
Goodday I would like to find out whether the following statements are true:  The equilibrium of the firm and the equilibrium of the industry are the same in the short run as well as the long run.  In the short run, the firm is in equilibrium when MC=MR=P &#...
Monday, April 12, 2010 at 8:03am by Haseena

Chem
Please tell me if these are right. 1.According to Le Chatelier’s principle, what is the effect on the products when N2 is added to the equilibrium mixture of each of the following reactions? a. 2NH3(g) < = > 3H2(g) + N2(g) B. N2(g) + O2(g) <= > 2NO(g) C. 2NO2(g)<...
Monday, December 6, 2010 at 2:58pm by Carrie

economics
Refer to the above diagram. If equilibrium real output is Q2, then: a. aggregate demand is AD1. b. the equilibrium price level is P1. c. producers will supply output level Q1. d. the equilibrium price level is P2.
Saturday, August 16, 2008 at 7:04am by Tarisha

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
A mixture consisting of 0.150 M N2(g) and 0.612 M H2(g) reacts and then reaches equilibrium according to the equation: N2(g) + 3H2(g) ⇋ 2NH3(g) At equilibrium, the concentration of ammonia is 0.213 M. Calculate the concentration (molarity) of H2(g) at equilibrium to 3 ...
Thursday, May 9, 2013 at 3:56am by Johnny

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(please check)
Just made it a new post didnt what it to get overcrowning.I hope this will help us figure out now For questions #1 through #10, refer to the following equilibrium system, with a Kc of 1.23E-03: C3H6O (aq) + 2C2H6O(aq)----> C7H16O2 (aq) + 2H2O (l) 1. What is the equilibrium ...
Monday, April 23, 2012 at 4:28pm by cateye

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

chem
this question is also based on the reaction above. The concentration of I2(g) is increased to 1.5 M, disrupting equilibrium. Calculate the new ratio of products to reactants with this higher concentration of iodine. Assume that the reaction has not yet regained equilibrium. ...
Wednesday, November 14, 2012 at 3:24pm by byke

Chemistry
3H2(g)+N2(g)=2NH3(g) Suppose the equilibrium constant Kp = 0.003337 for the reaction above. If the equilibrium mixture contains partial pressures H2 = 0.400 atm and N2 = 0.350 atm. What is the equilibrium partial pressure of NH3 in atm?
Thursday, September 23, 2010 at 4:09pm by Tiffany

chem101
The equilibrium under investigation is : H2CO3(aq) * H2O(l) + CO2(g) How does the pulling and pushing of the plunger affects the equilibrium? Is it consistent with LeChatelier's principle? my answer is that if you push you increase the pressure volume decrease and the ...
Monday, November 26, 2012 at 5:31pm by andrew78

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
For the following reaction at a certain temperature: 2( ) 2( ) ( ) 2 H F HF g g g +  it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2]=0.0500 M, [F2]=0.0100 M, and [HF]=0.400 M. If 0.200 mol F2 is added to this equilibrium mixture, calculate...
Wednesday, April 3, 2013 at 9:04pm by Jerry

PLEASE HELP Chem
Please tell me if these are right. 1.According to Le Chatelier’s principle, what is the effect on the products when N2 is added to the equilibrium mixture of each of the following reactions? a. 2NH3(g) < = > 3H2(g) + N2(g) B. N2(g) + O2(g) <= > 2NO(g) C. 2NO2(g)<...
Tuesday, December 7, 2010 at 9:05am by Carrie

Chemistry
a 1.00-mol sample of phosphorus pentachloride placed in 10.0-L reaction flask and allowed to come to equilibrium at 250 degrees celsius; PCL5(g) = PCL3(g) Cl2(g) if the amount of chlorine in the equilibrium mixture is0.470 mol, calculate (a) the equilibrium concentration of ...
Wednesday, October 19, 2011 at 3:06pm by MIndy

Chemistry
I don't get 0.89 either. What I don't know is about the equilibrium. Is that 0.50 quoted for CO2 equilibrium concn or initial concn? I worked it both ways and I obtained 0.80 if the 0.5M CO2 is at equilibrium. If initial then I used 1.6 = (2x)^2/(0.5-x) and obtained 0.29.
Friday, March 22, 2013 at 12:42pm by DrBob222

Chemistry
I don't get 0.89 either. What I don't know is about the equilibrium. Is that 0.50 quoted for CO2 equilibrium concn or initial concn? I worked it both ways and I obtained 0.80 if the 0.5M CO2 is at equilibrium. If initial then I used 1.6 = (2x)^2/(0.5-x) and obtained 0.29.
Friday, March 22, 2013 at 12:42pm by DrBob222

Chemistry
CaCO3(s) <--> CaO(s) + CO2 (g) A 5.9-gram sample of CaCO3 (molar mass = 100.) is placed in an evacuated 2.00L container and heated to 200^oC. Equilibrium is reached when 5.15% of the CaCO3 has decomposed. 1)Write the Kp expression for this reaction and calculate its ...
Thursday, March 3, 2011 at 10:36pm by Patrick

chm152
PCL5(g)=PCL3(g)+CL2(g) 5.0 moles of PCL5 are placed in a 10.0 L flask at 200 C and allowed to come to equilibrium. Analysis shows that 1.0 mole of is present in the equilibrium mixture. How many moles of Cl2 are present at equilibrium. Choose one answer. a. 0 b. 1.0 c. 2.0 d. ...
Saturday, March 27, 2010 at 11:38am by AMI

Chem
What is the equilibrium constant expression for the predominant equilibrium in HPO4^2- (aq)?
Wednesday, December 15, 2010 at 8:27pm by Liz

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 has been answered by Bob Pursley below. Keq is the equilibrium constant. If you make a distinction, Kc is the concentration equilibrium constant while Kp is the partial pressure equilibrium constant. If I see a problem where K is listed I always assume it is Kc but that ...
Monday, December 2, 2013 at 3:34pm by DrBob222

Chemistry
What are some equilibrium expressions that chemists use for weak acid equilibrium?
Saturday, March 30, 2013 at 10:01pm by Jordan

Chemistry
What are some equilibrium expressions that chemists use for weak acid equilibrium?
Saturday, March 30, 2013 at 10:02pm by Jordan

Chemistry
What are some of the equilibrium expressions that chemists use for weak acid equilibrium?
Saturday, March 30, 2013 at 11:17pm by Anonymous

AP Physics - Equilibrium
Describe several situations in which an object is not in equilibrium even though the net force on it is zero. I can't think of a single one. I can think of the opposite (equilibrium with net force not being zero) but I don't get it the other way around. Can someone explain?
Thursday, October 29, 2009 at 1:52am by henry

chemistry
How many moles of water will produced at equilibrium be if there is 1.0 mole of carbon dioxide formed at equilibrium?
Thursday, February 14, 2013 at 8:50am by Anonymous

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
Ok, so using Le Chatelier's Principle If you add heat to an exothermic reaction, the equilibrium will shift to the left. If you remove heat to an exothermic reaction, the equilibrium will shift to the right. What is it for an ENDOTHERMIC reaction? If you add a substance, the ...
Tuesday, June 4, 2013 at 11:56pm by K

Chemistry
1. In an equilibrium, A + B ---> C + D; "A" & "B" are mixed in a vessel at temperature "T". The initial concentration of "A" was twice the initial concentration of "B", & after the equilibrium has reached, concentration of "C" was twice the equilibrium concentration of "B...
Thursday, October 13, 2011 at 1:42am by Atul

Calculus/Algebra
Let the demand and supply functions be represented by p=D(q) and p=S(q), respectively, where p is the price per item in dollars and q is the quantity of items. D(q) = 42-.03q S(q) = .02q -20 Find the equilibrium price. Hint: you will first find the equilibrium quantity (q) and...
Monday, January 28, 2013 at 8:21am by Sam

Chemistry
Thanks drbob, I was just getting confused by the direction of the equilibrium. how can you tell which way the equilibrium shifts?
Wednesday, April 7, 2010 at 10:29pm by Amphee

chemistry
You work with the following system: 2X(g) <--> Y(g) At, equilibrium, [Y]=3[X]. If K=10, calculate the [Y] at equilibrium.
Thursday, May 10, 2012 at 11:13pm by Katie

chem!
You work with the following system: 2X(g) <---> Y(g) At, equilibrium, [Y]=3[X]. If K=10, calculate the [Y] at equilibrium.
Sunday, April 21, 2013 at 7:34pm by scilover

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