Write the reactions: a) Cu → CuO → CuCl2 → Cu (OH) 2 → CuO → CuSO4:

| February 17, 2021 | education

Write the reactions: a) Cu → CuO → CuCl2 → Cu (OH) 2 → CuO → CuSO4: b) AlCl3 → Al (OH) 3 → Al2O3 → Al2 (SO4) 3 → Al (OH) 3 → Al (OH) 2Cl :

a) Сu → СuО → СuСl2 → Сu(ОН)2 → СuО → CuSO4:

1) 2Cu + O2 → 2CuO;

2) CuO + 2HCl → CuCl2 + H2O;

3) CuCl2 + 2NaOH → Cu(OH)2↓ + 2NaCl;

4) Cu(OH)2↓ → CuO + H2O;

5) CuO + SO3 → CuSO4↓.

b) АlСl3 → Аl(ОН)3 → Аl2O3→ Al2(SO4)3 → Аl(ОН)3 → Аl(ОН)2Сl:

1) AlCl3 + 3KOH → 3KCl + Al(OH)3↓;

2) 2Al(OH)3↓ → Al2O3 + 3H2O;

3) Al2O3 + 3SO3 → Al2(SO4)3↓;

4) Al2(SO4)3 + 6KOH → 3K2SO4 + 2Al(OH)3↓;

5) Al(OH)3 + HCl → Al(OH)2Cl + H2O.



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