October 2021 0 7 Report
Расставьте коэффициенты методом электронного баланса, укажите окислитель и восстановитель, процессы окисления и восстановления.
а) Fe 2 O 3 + 3H 2 = 2Fe + 3H 2 O
b) Co + HNO 3 (разб.) = Co(NO 3 ) 2 + NO↑ + H 2 O
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