For a reversible reaction, the rate constants for the forward and backward reactions are 0.16 and 4 — Chemical Equilibrium Chemistry Question

💡 Solution & Explanation

The equilibrium constant K is the ratio of the forward rate constant to the backward rate constant. K = k_f / k_b = 0.16 / (4 × 10⁴) = 0.04 × 10⁻⁴ = 4 × 10⁻⁶. Therefore, correct answer is C.