1. 2Na + 2H2O = 2NaOH + H2 ↑
2. 2NaOH + CO2 = Na2CO3 + H2O
3. Na2CO3 + 2HCl = 2NaCl + CO2 ↑ + H2O
4. NaCl + AgNO3 = NaNO3 + AgCl ↓
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Answers & Comments
1. 2Na + 2H2O = 2NaOH + H2 ↑
2. 2NaOH + CO2 = Na2CO3 + H2O
3. Na2CO3 + 2HCl = 2NaCl + CO2 ↑ + H2O
4. NaCl + AgNO3 = NaNO3 + AgCl ↓