Chemical EquilibriumHard
Question
When NaNO3 is heated in a closed vessel, oxygen is liberated and NaNO2 is left behind. At equilibrium, NaNO3 (s) ⇋ NaNO2 (s) + 
O2 (g)
O2 (g)Options
A.addition of NaNO2 favours reverse reaction
B.addition of NaNO3 favours forwards reaction
C.increasing temperature favours forward reaction
D.increasing pressure favours reverse reaction
Solution
Addition of solids have no effect on equilibrium and temperature favours endothermic direction while increasing pressure will shift equilibrium in backward direction as ᐃng is +ve.
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