1. Cu(NO₃)₂ + 2NaOH → C(OH)₂↓ + 2NaNO₃
2. Cu(OH)₂ →t°→ CuO + H₂O
3. CuO + H₂SO4 → CuSO4 + H₂O
4. CuSO4 + K₂S → CuS↓ + K₂SO4
5. 2CuS + 3O₂ →t°→ 2CuO + 2SO₂↑
CuO + 2HNO₃ → Cu(NO₃)₂ + H₂O
1. Cu(NO₃)₂ + 2NaOH → C(OH)₂↓ + 2NaNO₃
2. Cu(OH)₂ →t°→ CuO + H₂O
3. CuO + H₂SO4 → CuSO4 + H₂O
4. CuSO4 + K₂S → CuS↓ + K₂SO4
5. 2CuS + 3O₂ →t°→ 2CuO + 2SO₂↑
CuO + 2HNO₃ → Cu(NO₃)₂ + H₂O