Solveeit Logo

Question

Chemistry Question on Equilibrium

When NaNO3 NaNO_3 is heated in a closed vessel, oxygen is liberated and NaNO2 NaNO_2 is left behind At equilibrium,

A

addition of NaNO2NaNO_2 favours reverse reaction

B

addition of NaNO3NaNO_3 favours forward reaction

C

increasing temperature favours forward reaction

D

increasing pressure favours reverse reaction

Answer

increasing pressure favours reverse reaction

Explanation

Solution

NaNO3(s)NaNO2(s)+12O2(g),H>0NaNO_3 \, ( s) \rightleftharpoons NaNO_2 \, (s) + \frac{1}{2} O_2 \, ( g), \, \triangle H > 0
NaNO3NaNO_3 and NaNO2 NaNO_2 are in so lid state, changing their a mount has no effect on equilibrium . Increasing temperature will favour forward reaction due to endotherm ic nature of reaction. Also, increasing pressure will favour backward reaction in which some O2O_2 (g ) w ill com bine with NaNO2(x)NaNO_2 \, ( x) forming NaCO3NaCO_3