Подскажите пожалуйста

Question

Подскажите пожалуйста

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Answer 1

1)Na2O+H2O=2NaOH
NaOH+HCl=NaCL+H2O
2NaCl+2H2O=2NaOH+H2+Cl2
2Na+Br2=2NaBr
2NaOH+CuSO4=Na2SO4+Cu(OH)2
Cu(OH)2=CuO+H2O
CuO+H2=Cu+H2O

2)2Na+2H2O=2NaOH+H2
2NaOH+H2S=Na2S+2H2O
Na2S+2H2O=2NaOH+H2S
NaOH+H2S=NaHS+H2O
NaHS+H2O=NaOH+H2S