Question

When $Na{NO}_3$ is heated in a closed vessel, oxygen is liberated and$Na{NO}_2$ is left behind. At equilibrium:

• A. Addition of $Na{NO}_2$ favours reverse reaction
• B. Addition of $Na{NO}_2$ favours forward reaction
• C. Increasing temperature favours forward reaction
• D. Decreasing pressure favours reverse reaction

Answer 1

The correct option is C Increasing temperature favours forward reaction

Changing the quantities of $NaN{O}_3$ and $NaN{O}_2$ doesn't affect the equilibrium. Only the pressure of $oxygen$ gas can change the equilibrium. Since the reaction is endothermic, the forward reaction is favored by the increase in temperature.

Hence right answer is option $C$.