Since you have not included the given reaction, I am going to explain you how to solve these kind of problems.
1) The chemical equilibrium is a
dynamic process. It means that in an equilibrim reaction there are two rectaions,
the forward reaction and the reverse reaction whose velocities are the same.
2) The general equation of a a chemical reaction in equlibrium is:
aA + bB ⇄ cC + dDWhere A and B are the reactants, C and D are the products, and a, b, c, d, are the coefficientes in the
balanced equation.3) So, the
equilibrium law is:
![Keq= (C]^c[D]^d)/([A]^a[B]^b)](https://img.qammunity.org/2019/formulas/chemistry/college/cixw7ymuc3edk971n86hx6ho686hp6uar7.png)
Where Keq is the constant of equilibrium
4) To complete the explanation, I am going to deal with an
example:
i) Consider the equlibrium reaction between hydrogen and iodine:
H₂ (g) + I₂(g) ⇄ 2HI(g)ii) The forward reaction is H₂ (g) + I₂(g) → 2HI(g)
iii) The reverse reaction is 2HI (g) → H₂ (g) + I₂(g)
iv) The
law of equilibrium is:
![Keq= ([HI]^2)/([H_2][I_2])](https://img.qammunity.org/2019/formulas/chemistry/college/q0rcgnym9y5tmnvu1hu0m6rmv8dgl1jqvp.png)