Ответы на вопрос:
1) cucl₂ + 2naoh = cu(oh)₂ ↓ + 2nacl cu²⁺ + 2cl⁻ + 2na⁺ + 2oh⁻ = cu(oh)₂↓ + 2na⁺ + 2cl⁻ cu²⁺ + 2oh⁻ = cu(oh)₂↓
3)al(no₃)₃ + 3koh = al(oh)₃↓+3kno₃al³⁺ + 3no₃⁻ + 3k⁺ +3oh⁻ = al(oh)₃↓ + 3k⁺ + 3no₃⁻al³⁺ + 3oh⁻ = al(oh)₃↓
4) 3agno₃ + alcl₃ = 3agcl↓+ al(no₃)₃
3ag⁺ + 3no₃⁻ + al³⁺ + 3cl⁻ = 3agcl↓+ al³⁺ + 3no₃⁻
3ag⁺ + 3cl⁻ = 3agcl↓
2) 2h₃po₄ + 3ca(oh)₂ = ca₃(po₄)₂↓ + 6h₂o
6h⁺ + po₄³⁻ + 3ca³⁺ + 6oh⁻ = ca₃(po₄)₂↓ + 6h₂o
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