Ответ:
Cr + 2HCl = CrCl2 + H2
CrCl2 + 2NaOH = Cr(OH)2 + 2NaCl
Cr(OH)2 = CrO + H2O
CrO + H2SO4 = CrSO4 + H2O
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Ответ:
Cr + 2HCl = CrCl2 + H2
CrCl2 + 2NaOH = Cr(OH)2 + 2NaCl
Cr(OH)2 = CrO + H2O
CrO + H2SO4 = CrSO4 + H2O