July 2022 1 21 Report
При электролизе водного раствора KBr на медном аноде протекает процесс _______

А) 2Br− → Br2 + 2ē
Б) 2H2O → O2 + 4H+ + 4ē
С) Cu → Cu2+ + 2ē
Д) 4OH− → O2 + 2H2O + 4ē

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