Учеба и наука
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Всего ответов: 1
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Cr3+ -3e- + 8OH- = (CrO4)2- + 4H2O | 3 | 6 | 2 |
(ClO)- +2e- + H2O = Cl- + 2OH- | 2 | | 3 |;
2Cr3+ + 3(ClO)- + 10OH- = 2(CrO4)2- + 3Cl- + 5H2O;
2CrCl3 + 3NaClO + 10NaOH = 2Na2CrO4 + 9NaCl + 5H2O.