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March 27, 2015

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: 46,030

Chemistry II
The equlibrium constant Kc for the reaction: has the value of 4.00 at 500K. If a mixture of 1.00 mol CO and 1.00 mol H2O is allowed to reach equilibrium at this temperature in a 1.00L flask, calculate the equilibrium concentrations of each species in the flask.
April 11, 2010 by curtis

Chemistry
The equilibrium constant is 16 for the gas phase reaction SO2 + NO2 <--> SO3 + NO at a certain temperature. If 3.0 moles each of SO2 and NO2 are placed together in an empty 1.0 liter flask and the system is allowed to come to equilibrium at this temperature, what will be...
April 20, 2014 by Amanda

Chemistry***
A mixture containing 19.8 moles of H2 and 7.2 mole of I2 was allowed to reach equilibrium in a 5 L closed vessel at ToC according to the equation: H2 (g) + I2 (g) 2HI (g) At equilibrium, 14 moles of H2 was present. The equilibrium constant for this reaction is denoted as Kc(1...
December 30, 2014 by plasma membrane

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?
March 25, 2013 by Anonymous

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...
March 8, 2013 by Lisa

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?
January 19, 2013 by Paul

AP Chem
At a particular temperature, Kp = 0.25 for the following reaction. N2O4(g) 2 NO2(g) (a) A flask containing only N2O4 at an initial pressure of 5.3 atm is allowed to reach equilibrium. Calculate the equilibrium partial pressures of the gases. (b) A flask containing only NO2 at ...
January 8, 2012 by Bill

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 ...
January 12, 2008 by S

chemistry
At a certain temperature, the equilibrium constant, K, for this reaction is 53.3. H2(g)+I2(g)->2HI(g) At this temperature, the reactants were placed in a container to react. If the partial pressures of H2 and I2 were each 0.300 bar initially, what is the partial pressure of...
March 12, 2015 by kelsey

HARD CHEM QUESTION- any help appreciated
Phosgene (COCl2) is a poisonous gas that dissociates at high temperature into two other poisonous gases, carbon monoxide and chlorine with equilibrium constant Kp = 0.0041 at 600 K. Find the equilibrium composition of the system after 0.124 atm of COCl2 is allowed to reach ...
May 13, 2013 by scilover

Chemistry
If the equilibrium constant K equals .05, and the reaction C3H8=C3H6 + H2 (all gases), starts with pure C3H8 and is allowed to reach equilibrium at 200 K at a total pressure of 2 bar. Calculate the partial pressure of H2 at equilbirum.
February 14, 2014 by Anonymous

Chemistry
Pure ethanoic acid (25.0cm3, CH3COOH), pure ethanol (35.0 cm3, C2H5OH) and pure water (20.0cm3, H2O) were mixed in a sealed flask at room temperature. The flask was placed in a heated water bath and maintained at 323K until equilibrium was established. CH3COOH(aq) + C2H5OH(aq...
May 1, 2012 by Henry

Chemistry
X2 + Y2 <=> 2XY 0.50 mole each of X2 and Y2 are placed in a 1.0 litre vessel and allowed to reach equilibrium at a given temperature. The equilibrium concentrations of XY is found to be 0.025 mol/L. What is the equilibrium cosntant for this reaction? Do I just get the ...
May 15, 2007 by Janna

ukm
The equilibrium constant (Kc) for the gas phase reaction 2 NH3 --> N2 + 3 H2 is 3 x 10-3 at some temperature. The reaction is started by placing a sample of ammonia in an empty one liter flask. When equilibrium is established there is 0.010 mole of N2 present. How much ...
January 8, 2012 by Anonymous

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 ...
May 26, 2008 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 ...
May 26, 2008 by Shivani

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 ...
March 9, 2012 by Kelly Hills

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 ...
October 19, 2011 by MIndy

chemistry
For the following reaction: 2NH3 ----> N2 + 3H3 6.42 moles of NH3 were placed in a 7.4 L flask and allowed to come to equilibrium. 3.60 moles of NH3 remain at equilibrium. Calculate Kc for the reaction.
April 15, 2010 by Sue

chemistry
For the following reaction: 2NH3 ----> N2 + 3H3 6.42 moles of NH3 were placed in a 7.4 L flask and allowed to come to equilibrium. 3.60 moles of NH3 remain at equilibrium. Calculate Kc for the reaction.
April 15, 2010 by Sue

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...
March 27, 2010 by ami

chm
The equilibrium constant for the equation 2 H2(g) + CO(g) CH3OH(g) Is 19 at a certain temperature. If there are 3.11 x 10-2 moles of H2 and 5.79 x 10-3 moles of CH3OH at equilibrium in a 6.75 L flask. What is the concentration of CO? At 1280 C the equilibrium constant for the...
March 16, 2015 by vikki

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....
June 3, 2012 by please help!

chemistry
A 0.10-mol sample of H2(g) and a 0.10-mol sample of Br2(g) are placed in a 2.0-L container. The reaction H2(g) + Br2(g) <----> 2 HBr(g) is then allowed to come to equilibrium. A 0.20 mol sample of HBr is placed into a second 2.0-L sealed container at the same temperature...
February 11, 2013 by Adam

Chemistry
equilibrium constant for; so3 <----> so2 + 1/2o2 is found to be 0.471M^1/2 @ 600deg C after a quantity of sulfur trioxide is allowed to come to equilibrium in a 1L flask @ 600deg C, 0.2 mol oxygen was found to be present. What mass of sulfur trioxide was initially placed...
July 19, 2011 by Maya

chemistry
Suppose a reaction has the equilibrium constant K = 2.3 10-7 at a particular temperature. Will there be a large or small amount of unreacted starting material present when this reaction reaches equilibrium? a)There will be a small amount of unreacted starting material present ...
March 15, 2015 by andy

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. ...
March 26, 2010 by AMI

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 ...
November 19, 2012 by chemdummy79

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...
October 2, 2013 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...
October 2, 2013 by Chemistry

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 ...
April 9, 2012 by Sam

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? ...
October 2, 2013 by Chemistry

chemistry
At a certain temperature, Keq is 4.13 x 10^-5 for the equilibrium: 2IBr(g) ↔ I2(g) + Br2(g) Assume that the equilibrium is established at the above temperature by adding only the reactant to the reaction flask. What are the concentrations of I2 and Br2 in equilibrium ...
June 5, 2014 by Ryan

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 ...
January 26, 2012 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 ...
January 27, 2012 by AMI

chm
The equilibrium constant for the equation 2 H2(g) + CO(g) CH3OH(g) Is 19 at a certain temperature. If there are 3.11 x 10-2 moles of H2 and 5.79 x 10-3 moles of CH3OH at equilibrium in a 6.75 L flask. What is the concentration of CO? What is the Kp at 1439 C for the reaction...
March 16, 2015 by vikki

Chemistry
Pure phosgene gas (COCl2), .03mole, was placed in a 1.5 L container. It was heated to 800k, and at equilibrium the pressure of CO was found to be .497 atm. Calculate the equilibrium constant Kp for the reaction CO(g) + Cl2(g) = COCL2(g)
April 25, 2010 by Amphee

Chemistry
Pure phosgene gas (COCl2), .03mole, was placed in a 1.5 L container. It was heated to 800k, and at equilibrium the pressure of CO was found to be .497 atm. Calculate the equilibrium constant Kp for the reaction CO(g) + Cl2(g) = COCL2(g)
April 25, 2010 by Adam

AP CHEMISTRY
At 80.C, Kc = 1.87 10-3 for the reaction. PH3BCl3(s) PH3(g) + BCl3(g) (a) Calculate the equilibrium concentrations of PH3 and BCl3 if a solid sample of PH3BCl3 is placed in a closed vessel at 80.C and decomposes until equilibrium is reached. (b) If the flask has a volume of ...
February 6, 2012 by Stan3000

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 ...
February 29, 2012 by jon

AP CHEMISTRY
For the reaction I2(g) + Br2(g) 2 IBr(g), Kc = 280. at 150.C. Suppose that 0.590 mol IBr in a 2.50-L flask is allowed to reach equilibrium at 150.C. What are the equilibrium concentrations of IBr, I2, and Br2?
February 6, 2012 by Stan3000

chem
For the reaction I2(g) + Br2(g) 2 IBr(g), Kc = 280. at 150.C. Suppose that 0.570 mol IBr in a 2.50-L flask is allowed to reach equilibrium at 150.C. What are the equilibrium concentrations of IBr, I2, and Br2?
February 20, 2013 by Hannah

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 ...
July 11, 2012 by Simon

Chem
I stuck on this problem. Can you help me to solve it? A reaction mixture in a 3.67L flask at a certain temp. initially contains 0.763g H2 and 96.9g I2. At equilibrium, the flask contains 90.4g HI. Calculate the equilibrium constant(Kc) for the reaction at this temp. H2(g) + I2...
October 17, 2010 by Kim

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
February 18, 2012 by Abdela

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?
June 30, 2011 by Abby

chemistry
A mixture of 0.100 mol NO, 0.200 mol H2 and 0.0800 mol N2 were placed in a 2.00L reaction vessel, heated, and allowed to come to equilibrium conditions. At equilibrium, the molar concentration of N2 was 0.0500 mol/L. Calculate Kc for this reaction. 2NO + 2H2 <---> N2 + ...
July 18, 2014 by gab

Chemistry
Two moles of pure ammonia were injected into a 2.00L flask at a certain temperature. The equilibrium mixture: 2NH3(G)-->N2(G) + 3H2(G) <-- A) What is the value of the equilibrium constant at this temperature? b) how would the number of moles of ammonia be affected if the...
May 17, 2009 by Jimmy

chemistry
At a certain temperature, the Equilibrium constant, Kc, for this reaction is 53.3. At this temperature, 0.500 mol of H2 and 0.500 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present at Equilibrium? equation: H2 + I2 = 2HI
December 11, 2012 by cody

chemistry
The equilibrium constant (Kc) for the gas phase reaction 2 NH3 N2 + 3 H2 is 3.0 x 10-3 at some temperature. The reaction is started by placing a 0.040-mol sample of ammonia in an empty one-liter flask. When equilibrium is established how much N2 is present? 1. ) 0.019 mol 2...
October 25, 2009 by James

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?
March 18, 2012 by Wendy

Chemistry
In an experiment, 0.0300 moles each of SO3(g), S02(g), and O2(g) were placed in a 10.0L flask at a certain temperature. When the reaction came to equilibrium, the cocentration of SO2(g) in the flask was 3.50x10^-5 molar. What is Kc for the reaction? 2SO2(g) + O2(g) <--> ...
November 19, 2012 by Mitch

Chem
I am having problems with these two questions. 1.The value of the equilibrium constant (Kp) as represented by the first chemical equation is 1.58 x 102 at 727 C. Calculate the value of the equilibrium constant (Kp) for the second equation at the same temperature. Express ...
January 22, 2009 by Mark

Chemistry
At 25C, K = 0.090 for the following reaction. H2O(g) + Cl2O(g) equilibrium reaction arrow 2 HOCl(g) Calculate the concentrations of all species at equilibrium for the following case. 1.3 mol pure HOCl is placed in a 1.6 L flask [HOCl]________ [Cl2O]________ [H2O]________ ...
February 27, 2012 by Ann

AP CHEM
Kc = 1.87 10-3 for the following reaction. PH3BCl3(s)=>PH3(g) + BCl3(g) (a) Calculate the equilibrium concentrations of PH3 and BCl3 if a solid sample of PH3BCl3 is placed in a closed vessel and decomposes until equilibrium is reached. (b) If the flask has a volume of 0.400...
February 7, 2009 by Ashley

chemistry(just need to clarify, no need to solve)
When a sample of NO2(g) (5.641 mol) is placed in 360.0 L reaction vessel at 716.0 K and allowed to come to equilibrium the mixture contains 3.412 mol of NO(g). What is the equilibrium concentration (mol/L) of NO(g)? When a sample of PCl5(g) (1228 grams) is placed in 270.0 L ...
April 12, 2010 by bme1

chemistry
200g of HOCl is placed inside a 3L container and allowed to reach equilibrium. Find the equilibrium concentrations for all species. Given: 2HOCL (g) <--> H20 (g) + Cl20 (g) when Delta H = +56 kJ and Keq = 11.11 at 25 C
April 8, 2013 by Anonymous

chemistry
Subject equilibria Pure ethanoic acid (25.0cm3, CH3COOH), pure ethanol (35.0 cm3, C2H5OH) and pure water (20.0cm3, H2O) were mixed in a sealed flask at room temperature. The flask was placed in a heated water bath and maintained at 323K until equilibrium was established. ...
May 7, 2012 by yaya

Chemistry 30
A mixture of 2.5 moles of H2O and 100 g of C are placed in a 50.0 L container and allowed to come to equilibrium in the following reaction: C(s) + H2O(g)  CO(g) + H2(g) The equilibrium concentration of hydrogen gas is found to be 0.040 M. What is the ...
September 30, 2014 by Ade

Chem
A mixture of 2.5 moles of H2O and 100 g of C are placed in a 50.0 L container and allowed to come to equilibrium in the following reaction: C(s) + H2O(g)  CO(g) + H2(g) The equilibrium concentration of hydrogen gas is found to be 0.040 M. What is the ...
October 3, 2014 by Ade

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
December 10, 2013 by Timothy urgent need

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] = ...
December 18, 2013 by Isaiah

chemistry
Nitrosyl bromide decomposes according to the following equation. 2NOBr (g)(equilibrium arrow) 2NO (g) + Br2 (g) A sample of NOBr (0.64 mol) was placed in a 1.00-L flask containing no NO or Br2. At equilibrium the flask contained 0.46 mol of NOBr. How many moles of NO and Br2, ...
November 19, 2010 by jessie

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
December 10, 2013 by Timothy urgent need

chem class
Nitrosyl bromide decomposes according to the following equation. 2NOBr (g)(equilibrium arrow) 2NO (g) + Br2 (g) A sample of NOBr (0.64 mol) was placed in a 1.00-L flask containing no NO or Br2. At equilibrium the flask contained 0.46 mol of NOBr. How many moles of NO and Br2, ...
November 18, 2010 by jessie

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 ...
December 3, 2013 by Anonymous

Chemistry
A sealed 1.0L flask is charged with .500mol I2 and .500mol Br2 and an equilibrium reaction esues: I2(g)+Br2(g)=2IBr(g) When the container contents achieve equilibrium, the flask contains .84 mol of IBr. What is the value of the eqilibrium constant? (K)
March 21, 2013 by Jonah

Chemistry
At 400C the reaction H2+I2<->2HI has an equilibrium constant Kp value of 55.5. A mixture of 1 mole of H2 and 1 mole of I2 is placed in a flask and heated to 400C. Calculate the mole fraction of HI in the mixture of gases when equilibrium reached.
February 1, 2013 by Kelly

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 ...
December 3, 2013 by Anonymous

College Chemistry 2 - Equilibrium Constants/Conc.
The equilibrium constant for the reaction is 37 at a certain temperature. 2H2(g) + CO(g)<==> CH3OH(g) If there are .0293 moles of H2 and .00353 moles of CH3OH at equilibrium in a 4.53-L flask, what is the concentration of CO? .....So far I have found: H2= .0293/4.53= ....
March 4, 2011 by Raeyna

chemistry
Consider the following reaction in a closed reaction flask. If 0.600 atm of gas A is allowed to react with 1.20 atm of gas B and the reaction goes to completion at constant temperature and volume, what is the total pressure in the reaction flask at the end of the reaction? ...
November 9, 2011 by Celeste

chemistry
sulfur trioxide gas dissociates into sulfer dioxide gas and oxygen gas at 1250 degrees C. In an experiment, 3.6 moles of sulfur trioxide were placed into an evacuated 3.0-L flask. THe concentration of sulfur dioxide gas measured at equilibrium was found to be 0.20 M. What is ...
April 29, 2007 by alexa

Chemistry
I am having great difficulty with the following questions. Any and all help will be greatly appreciated. I have read the chapter and even looked up online tutorials. I still do not understand it. 2 NO (G) + O2 (G) > 2 NO2 (G) Write the equilibrium constant expression for ...
September 22, 2014 by Lissa

chemistry
I am given the following reaction: 2NH3(g) -----> N2(g) + 3H2(g) 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 nitrogen, what is the ...
May 26, 2008 by Eric

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. ...
December 26, 2012 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. ...
December 26, 2012 by Matt

Chemistry
Consider the reaction HCHO(g) *) H2(g) + CO(g). 1.0 mol of HCHO, 1.0 mol of H2 and 1.0 mol of CO exist in equilibrium in a 2.0 L reaction vessel at 600C. a) Determine the value of the equilibrium constant Kc for this system. 2.0 moles of HCHO and 1.0 mol of CO are then added ...
June 3, 2014 by Susan

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 ...
March 5, 2012 by Jessica

AP Chemistry
At a certain temperature, the equilibrium constant Kc is 0.154 for the reaction 2SO2(g) + O2(g)<-> 2SO3(g) What concentration of SO3 would be in equilibrium with 0.250 moles of SO2 and 0.885 moles of O2 in a 1.00 liter container at this temperature? Note: These latter ...
November 27, 2013 by Gabriella

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 ...
March 18, 2012 by Raskin

Chemistry
A 1.00 L flask containing the equilibrium mixture CO +Cl2 <-> COCl2 was found to contain 0.400 mol of COCl2, 0.100 mol of CO, and 0.500 mol of Cl2. If 0.300 mol of CO is added at constant temperature, what will be the new concentrations of each component at equilibrium?(...
April 29, 2012 by Divya

Chemistry
At 25C, K = 0.090 for the following reaction:H2O(g) + Cl2O(g) 2 HOCl(g) Calculate the concentrations of all species at equilibrium for each of the following cases. (a) 1.2 g H2O and 1.6 g Cl2O are mixed in a 1.4 L flask. (b) 1.2 mol pure HOCl is placed in a 1.9 L flask
February 15, 2009 by Lindsey

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 ...
July 21, 2012 by ken

chemistry
A 1.00 mol sample of N2O4 (g) is placed in a 10.0 L vessel and allowed to reach equilibrium accourding to the equation N2O4(g) <----> 2NO2(g) K = .0004 Calculate the equilibrium concentrations of N2O4(g) and NO2(g)
September 19, 2011 by kevin

CHM 152
Consider the following equilibrium: PCl3 + Cl2 = PCl5 Kc=26 @ 250 degree Celcius 1.0 mol of PCl3 , 1.0 mol of Cl2 , and 5.0 mol of PCl5 are placed in a 10.0L flask at 250 C and allowed to come to equilibrium. What is the concentration, in M, of at equilibrium? Choose one ...
March 26, 2010 by AMI

chem
Consider the following reaction. 2 NO(g) + 2 H2(g) N2(g) + 2 H2O(g) An equilibrium mixture of this reaction at a certain temperature was found to have [NO] = 8.1 10-3 M, [H2] = 4.1 10-5 M, [N2] = 5.3 10-2 M, and [H2O] = 2.9 10-3 M. What is the value of the equilibrium constant...
April 15, 2011 by Rebekah

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 ...
April 18, 2013 by Anonymous

chemistry
Consider the reaction: 2H2S(g)⇌2H2(g)+S2(g) An equilibrium mixture of this reaction at a certain temperature was found to have [H2S]= 0.542M , [H2]= 2.6410−2M , and [S2]= 7.5410−3M . What is the value of the equilibrium constant at this temperature?
December 5, 2014 by Anon

Chemistry1412
Consider the following reaction: CO(g)+2H2(g)⇌CH3OH(g) An equilibrium mixture of this reaction at a certain temperature was found to have [CO]= 0.115M , [H2]= 0.110M , and [CH3OH]= 0.190M . What is the value of the equilibrium constant (Kc) at this temperature?
March 18, 2015 by jessicaCC

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 ...
March 18, 2013 by Anonymous

chemistry
How is the reaction quotient used to determine whether a system is at equilibrium? The reaction is at equilibrium when Q > Keq. At equilibrium, the reaction quotient is undefined. The reaction quotient must be satisfied for equilibrium to be achieved. The reaction is at ...
February 25, 2015 by danny

chemistry
Equilibrium constant K for some reaction at temperature 300K was found to be 100 .Calculate equilibrium for same reaction at 400K if R= 8.23 change in enthalpy is 5000J
August 18, 2014 by shashank

chemistry
At high temperature, 2.00 mol of CH2O was placed in a 4.00 L container where it decomposed via the equilibrium CH2O(g)<=>CO(g)+H2(g) . At equilibrium, the concentration of CO was measured to be 0.0317 M. What is Kc for this reaction at this temperature?
April 20, 2013 by alex

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. ...
November 18, 2010 by Carla

chemistry
A reaction mixture is in a 5.4 L flask at 25 oC initially contains only 7.64 grams of acetic acid. (CH3COOH). Set up your I.C.E. table and use it to answer the following questions. HINT: You will need to look up the Ka for this equilibrium reaction. CH3COOH(aq) CH3COO-(aq...
March 1, 2011 by juan

Chemistry
.924moles of A(g) is placed in 1L at 700C where 38.8% dissociated when equilibrium was established. 3A <--> 5B + 2C What is the value of the equilibrium constant at the same temperature? I keep getting .022
October 11, 2010 by Anonymous

Chemistry
A <---> 2B + C at a certain temperature the equilibrium pressure of the system is 0.318atm. Determine Kp for this reaction. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2B + C = 0.318atm /3 = 0.106 CO2 = 0.106 atm NH3 = 2(1.06) atm =0.212 atm Kp = PNH3 ^2 x PCO2 kp = 0.212^2...
October 8, 2008 by Tri

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 ...
July 21, 2012 by ken

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 ...
April 10, 2012 by harry

Chemistry
.924moles of A9g) is placed in 1L at 700C where 38.8% dissociated when equilibrium was established. 3A <--> 5B + 2C What is the value of the equilibrium constant at the same temperature? I keep getting .024
October 10, 2010 by Anonymous

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