Question
Chemistry Question on Equilibrium
When NaNO3 is heated in a closed vessel, oxygen is liberated and NaNO2 is left behind At equilibrium,
A
addition of NaNO2 favours reverse reaction
B
addition of NaNO3 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)+21O2(g),△H>0
NaNO3 and NaNO2 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 O2 (g ) w ill com bine with NaNO2(x) forming NaCO3