2NaNO3 = 2NaNO2 + O2
N(+5)+2e = N(+3) 2 ок-ль, в-ие
2O(-2) -4e = O2(0) 1 в-ль, ок-ие
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2NaNO3 = 2NaNO2 + O2
N(+5)+2e = N(+3) 2 ок-ль, в-ие
2O(-2) -4e = O2(0) 1 в-ль, ок-ие