Объяснение:
1. Cu+O → CuO
2. CuO+H2SO4 → CuSO4+H2O
3. CuSO4 + 2KOH → Cu(OH)2+K2SO4
4. Cu(OH)2 → CuO+H2O
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Объяснение:
1. Cu+O → CuO
2. CuO+H2SO4 → CuSO4+H2O
3. CuSO4 + 2KOH → Cu(OH)2+K2SO4
4. Cu(OH)2 → CuO+H2O