Question

Which will not appear in the equilibrium constant expression for the reaction below?

H2O(g) + C(s) <--->H^2(g) + CO(g)

A: [H2O]
B: [C]
C: [H2]
D: [CO]

Answer 1

The answer is B

Step-by-step explanation:

Edge 2020

Answer 2

Answer: B: [C]

Explanation:
`H_2O(g)+C(s)\leftrightharpoons H_2(g)+CO(g)`

Equilibrium constant is defined as the ratio of the product of the concentration of products to the product of the concentration of reactants each raised to their stochiometric coefficient.

But the concentration of solids in their standard state is taken as 1.

Thus [C(s)] =1