Ответ:
2NaCl + Pb(NO₃)₂ ⟹ PbCl₂↓ + 2NaNO₃
2Na⁺ + 2Cl¯ + Pb²⁺ + 2NO₃¯ ⟹ PbCl₂↓ + 2Na⁺ + 2NO₃¯
2Cl¯ + Pb²⁺ ⟹ PbCl₂↓
3Zn + 2FeBr₃ ⟹ 3ZnBr₂ + 2Fe
3Zn + 2Fe³⁺ + 6Br¯ ⟹ 3Zn²⁺ + 6Br¯ + 2Fe
3Zn + 2Fe³⁺ ⟹ 3Zn²⁺ + 2Fe.
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Ответ:
2NaCl + Pb(NO₃)₂ ⟹ PbCl₂↓ + 2NaNO₃
2Na⁺ + 2Cl¯ + Pb²⁺ + 2NO₃¯ ⟹ PbCl₂↓ + 2Na⁺ + 2NO₃¯
2Cl¯ + Pb²⁺ ⟹ PbCl₂↓
3Zn + 2FeBr₃ ⟹ 3ZnBr₂ + 2Fe
3Zn + 2Fe³⁺ + 6Br¯ ⟹ 3Zn²⁺ + 6Br¯ + 2Fe
3Zn + 2Fe³⁺ ⟹ 3Zn²⁺ + 2Fe.