Предмет: Химия, автор: ernstkoval

даю 100 баллов задание прикреплено в виде фото

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Автор ответа: dyexfnf

Ответ:

Объяснение:

CuS + 4 HNO₃ → Cu(NO₃)₂ + 2NO₂ + S + 2H₂O

восстановитель S⁻² - 2 e- → S⁰ процесс окисления

окислитель 2N⁺⁵ + 2 e- → 2N⁺⁴ процес восстановления

сумма коэффициентов - 11

CuBr2 + 4 HNO₃ → Cu(NO₃)₂ + Br₂+ 2 H₂O + 2 NO₂

восстановитель 2Br⁻¹ - 2 e- → 2Br⁰ процесс окисления

окислитель 2N⁺⁵ + 2 e- → 4N⁺² процес восстановления

сумма коэффициентов - 11

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