Question

Осуществите превращения. Na2O → NaOH → Na2S → Na2SO4 1) Na2O + ... → NaOH 2) NaOH + ... → Na2S 3) Na2S + ... → Na2SO4

Answer 1

Na2O+H2O-->2NaOH

2NaOH+H2S-->Na2S+2H2O

Na2S+H2SO4-->Na2SO4+H2S

Answer 2

1. Na2O + H2O → 2 NaOH
2. 2 NaOH + H2S → Na2S + 2 H2O
3. Na2S + 2 H2O2 + H2SO4 → Na2SO4 + 2 H2O