Осуществитe следующие превращения:
a) CuSO4 - Cu(OH)2 - CuCl2 -Cu(OH)2 - CuO;
b) NaOH - Na2SO4 - NaCl - NaNO3.
a) CuSO4 - Cu(OH)2 - CuCl2 -Cu(OH)2 - CuO;
b) NaOH - Na2SO4 - NaCl - NaNO3.
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Ответ:
a) CuSO4 → Cu(OH)2 → CuCl2 → Cu(OH)2 → CuO
CuSO4+2KOH → Cu(OH)2+K2SO4
Cu(OH)2+2HCl → CuCl2+2H2O
CuCl2+2NaOH → Cu(OH)2+2NaCl
Cu(OH)2 → CuO+H2O
b) NaOH → Na2SO4 → NaCl → NaNO3
CuSO4 +2 NaOH → Cu(OH)2 + Na2SO4
Na2SO4 + BaCl2 → 2NaCl + BaSO4↓
NaCl + AgNO3 → AgCl↓ + NaNO3