The value of K_eq for the equilibrium H₂ (g) + I₂ (g) 2 HI (g)
Is 54.0 at 427°C. What is the value of K_eq for the equilibrium below?
HI (g) 1/2 H₂ (g) + 1/2 I₂ (g)

Question

The value of K_eq for the equilibrium H₂ (g)+ I₂ (g) 2 HI (g) Is 54.0 at 427°C. What is the value of K_eq for the equilibrium below? HI (g) 1/2 H₂ (g)+ 1/2 I₂ (g)

Quizplus · Accepted Answer

K_eq for the reverse reaction is the reciprocal of the K_eq for the forward reaction. Thus, K_eq for the reverse reaction, which is the given equilibrium, would be 1/54.0 = 0.0185. To get K_eq for the forward reaction, we use the equation: K_eq for the forward reaction = (1/K_eq for the reverse reaction)^2 = (1/0.0185)^2 = 27.0 (approx) Therefore, the best choice is (C).

The Value of Keq for the Equilibrium H2 (G)+ I2

The Value of K_eq for the Equilibrium H₂ (G)+ I₂