Phosgene (carbonyl chloride), COCl2, is an extremely toxic gas that is used in m

Question

Phosgene (carbonyl chloride), COCl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. Phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures:

CO(g)+Cl2(g)?COCl2(g)

Carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 472?C . At equilibrium, the concentrations were measured and the following results obtained:

Part A) What is the equilibrium constant, Kp, of this reaction?

Part B) The following reaction was performed in a sealed vessel at 789?C :

H2(g)+I2(g)?2HI(g)

Initially, only H2 and I2 were present at concentrations of [H2]=3.20M and [I2]=2.10M. The equilibrium concentration of I2 is 0.0100M . What is the equilibrium constant, Kc, for the reaction at this temperature?

Express your answer numerically.

WILL RATE IF BOTH PARTS ARE ANSWERED CORRECTLY

Explanation / Answer

Part A)

Kp = Reactants / Products

Kp = [COCL2] / [CO][CL2]

Kp = (.130) / (1.28)(.900)

Kp = .113

Part B)

The change in I2 is 2.09 therefore the change in H2 is also 2.09 and then the change in 2HI is double this in the positive direction

K = [HI]^2 / [H2][I2]

K = (4.18)^2 / (1.11)(.0100)

K = 1574.09

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