1. Na2O + H2O = 2NaOH
2. Na2O + 2HNO3 = 2NaNO3 + H2O
3. 2NaOH + CO2 = Na2CO3 + H2O
4. Na2CO3 + 2HNO3 = 2NaNO3 + H2O + CO2
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Verified answer
1. Na2O + H2O = 2NaOH
2. Na2O + 2HNO3 = 2NaNO3 + H2O
3. 2NaOH + CO2 = Na2CO3 + H2O
4. Na2CO3 + 2HNO3 = 2NaNO3 + H2O + CO2