It decomposes into equal volumes of nitrogen and oxygen only at high temperature.
2NO(g) → N2(g) + O2(g)
It reacts with heated metal:-
Cu(s) + NO(g) → CuO(s) + O2(g)
It combines with oxygen to form Nitrogen (iv) oxide.
2NO(g) + O2(g) → 2NO2(g)
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