Ответ:
NaCl→Na→NaOH→NaHCO3→Na2CO3→NaCl
1)2NaCl → 2Na+Cl2
2)2Na + 2H2O → 2NaOH + H2↑
3)NaOH+CO2↑ → NaHCO3
4)NaHCO3 → Na2CO3+CO2↑+H2O
5)Na2CO3+2HCl → 2NaCl+CO2↑+H2O
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Ответ:
NaCl→Na→NaOH→NaHCO3→Na2CO3→NaCl
1)2NaCl → 2Na+Cl2
2)2Na + 2H2O → 2NaOH + H2↑
3)NaOH+CO2↑ → NaHCO3
4)NaHCO3 → Na2CO3+CO2↑+H2O
5)Na2CO3+2HCl → 2NaCl+CO2↑+H2O