Na + 2S = Na2S
2Na + Cl2 = 2NaCl
2Na + 2H2O = 2NaOH + H2
2NaOH + ZnCl2 = Zn(OH)2 + 2NaCl
2NaOH + H2O + CO2 = Na2CO3 + 2H2O
Na2CO3 + H2O + CO2 = 2NaHCO3
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Answers & Comments
Na + 2S = Na2S
2Na + Cl2 = 2NaCl
2Na + 2H2O = 2NaOH + H2
2NaOH + ZnCl2 = Zn(OH)2 + 2NaCl
2NaOH + H2O + CO2 = Na2CO3 + 2H2O
Na2CO3 + H2O + CO2 = 2NaHCO3