MCQ
Aq. solution of sodium cyanide is
- AAcidic
- BAmphoteric
- ✓Basic
- DNetural
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${{O}_{(g)}}+{{e}^{-}}=O_{(g)}^{-}\Delta {{H}^{o}}=-142\ kJ\,mo{{l}^{-1}}$
$O_{(g)}^{-}+{{e}^{-}}=O_{(g)}^{2-}\Delta {{H}^{o}}=844\ kJ\,mo{{l}^{-1}}$

Equilibrium constant, ${K_C} = \frac{{{{[N{H_3}]}^2}}}{{[{N_2}]{{[{H_2}]}^3}}}$