Ответ:
Объяснение:
2Cr2O3 = 4Cr + 3O2
4 Cr+ 3 O2 = 2 Cr2O3
6HCl + Cr2O3 = 2CrCl3 + 3H2O
3KOH + CrCl3 = Cr(OH)3 + 3KCl
2Cr(OH)3 + 3H2SO4 = Cr2(SO4)3 + 6H2O
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Ответ:
Объяснение:
2Cr2O3 = 4Cr + 3O2
4 Cr+ 3 O2 = 2 Cr2O3
6HCl + Cr2O3 = 2CrCl3 + 3H2O
3KOH + CrCl3 = Cr(OH)3 + 3KCl
2Cr(OH)3 + 3H2SO4 = Cr2(SO4)3 + 6H2O