Ответ:
2 вариант.
1. H2SO4+2NaOH→Na2SO4+2H2O
2. 2HCl+Mg→MgCl2+H2
3. 2HNO3+Na2O→2NaNO3+H2O
4. 2KOH+H2S→K2S+2H2O
5. 3Ba(OH)2+2K3PO4→Ba3(PO4)2+6KOH
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Ответ:
2 вариант.
1. H2SO4+2NaOH→Na2SO4+2H2O
2. 2HCl+Mg→MgCl2+H2
3. 2HNO3+Na2O→2NaNO3+H2O
4. 2KOH+H2S→K2S+2H2O
5. 3Ba(OH)2+2K3PO4→Ba3(PO4)2+6KOH