For SO3(g) SO2(g) + 1/2 O2(g), Kc = 5 * 10⁻². What is Kc for the reaction 2 SO2(g) + O2(g) 2 SO3(g)?

Question

For SO3(g) <-> SO2(g) + 1/2 O2(g), Kc = 5 * 10⁻². What is Kc for the reaction 2 SO2(g) + O2(g) <-> 2 SO3(g)?

Accepted Answer

400. The target reaction is the reverse of the given one, doubled, so K = (1/Kc)² = (1/0.05)² = 400.

For SO3(g) <-> SO2(g) + 1/2 O2(g), Kc = 5 * 10⁻². What is Kc for the reaction 2 SO2(g) + O2(g) <-> 2 SO3(g)?