Question

Which of the following equilibria will shift to right side on increasing the temperature
(a) $CO(g) + H_2O(g) \rightleftharpoons CO_2(g) + H_2(g)$
(b) $2SO_2(g) + O_2(g) \rightleftharpoons 2SO_3(g)$
(c) $H_2O(g) \rightleftharpoons H_2(g) + \frac{1}{2} (O_2)(g)$
(d) $4HCl(g) + O_2(g) \rightleftharpoons 2H_2O(g) + 2Cl_2(g)$

Answer 1

The equilibrium which will shift to the right side on increasing the temperature is (c) H₂O (g) ⇄ H₂ (g) + 1/2 O₂ (g)

- For endothermic reactions, the equilibrium will shift to the right side on increasing the temperature.

- For exothermic reactions, the equilibrium will shift to the left side on increasing the temperature.

- Out of the given reactions, only water splitting is endothermic. Rest all are exothermic reactions.

- So option (c) is the correct answer.