Question

The value of the equilibrium constant for the following reaction is 0.200 at a given temperature: 2HI(g) ⇌ H2 (g) + I2 (g). If [HI] = 0.200 M, [H2 ] = 0.200 M, and [I2 ] = 0.200 M, determine if the reaction is at equilibrium. If it is not, in which direction will it proceed to reach equilibrium?

Answer 1

The reaction is at equilibrium because the given equilibrium constant (K) is equal to the calculated equilibrium constant.

Step-by-step explanation:

In order to determine if the reaction is at equilibrium, we need to compare the given concentrations of the reactants and products with the equilibrium constant (K). The equilibrium constant expression for the reaction is K = [H2][I2]/[HI]^2.

Substituting the given values into the equation, we get: K = (0.200 M)(0.200 M)/(0.200 M)^2 = 0.200.

Since the equilibrium constant (K) is equal to the given value, the reaction is at equilibrium.