1. CaSO₄ + Pb(NO₃)₂ → Ca(NO₃)₂ + PbSO₄
2. Ca(NO₃)₂ + 2H₂O → Ca(OH)₂ + 2HNO₃
3. 2HNO₃ + Na₂O → 2NaNO₃ + H₂O
4. NaNO₃ + KCl → NaCl + KNO₃
1. CaSO₄ + Pb(NO₃)₂ → Ca(NO₃)₂ + PbSO₄
2. Ca(NO₃)₂ + 2H₂O → Ca(OH)₂ + 2HNO₃
3. 2HNO₃ + Na₂O → 2NaNO₃ + H₂O
4. NaNO₃ + KCl → NaCl + KNO₃