1) CuO + CO = Cu↓ + CO2
2) NaOH +CO2 = NaHCO3
3) NaHCO3 + NaOH = Na2CO3 + H2O
4) Na2CO3 = Na2O + CO2
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Answers & Comments
1) CuO + CO = Cu↓ + CO2
2) NaOH +CO2 = NaHCO3
3) NaHCO3 + NaOH = Na2CO3 + H2O
4) Na2CO3 = Na2O + CO2