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zheka24 [161]
3 years ago
14

The molar concentrations for the reactants and products at equilibrium are found to be [CCl4]=1.0 M, [O2]=0.3 M, [COCl2]=4.0 M,

and [Cl2]=2.0 M. What is the value of the equilibrium constant for this reaction? 2CCl4(g)+O2(g)⇌2COCl2(g)+2Cl2(g) Express your answer numerically using two significant figures.
Chemistry
1 answer:
kirill115 [55]3 years ago
6 0

Answer:

2.1\times 10^2 is the value of the equilibrium constant for this reaction.

Explanation:

2CCl_4(g)+O_2(g)\rightleftharpoons 2COCl_2(g)+2Cl_2(g)

Molar concentrations of CCl_4 at equilibrium =[CCl_4]=1.0M

Molar concentrations of O_2 at equilibrium =[O_2]=0.3M

Molar concentrations of COCl_2 at equilibrium =[COCl_2]=4.0M

Molar concentrations of Cl_2 at equilibrium =[Cl_2]=2.0M

The equilibrium constant is given as:

K_c=\frac{[COCl_2]^2[Cl_2]^2}{[CCl_4]^2[O_2]}=\frac{(4.0 M)^2\times (2.0M)^2}{(1.0M)^2\times (0.3 M)}

K_c=213.33\approx 2.1\times 10^2

2.1\times 10^2 is the value of the equilibrium constant for this reaction.

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