ХИМИЯ !!


Сера в оксиде серы (IV) проявляет свойства окислителя в реакции, уравнение которой:
a) SO2 + 2H2S = 3S + 2H2O
в) H2O2 + SO2 = H SO,
r) SO₂ + NaOH = NaHSO₂​
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