1.2Na+S=Na2S
2.2CH3COOH+Zn =Zn(CH3COO)2 + H2
3.Ba(OH)2+Na2CO3=BaCO3+2NaOH
4.SiO2+2KOH =K2SiO3 + H2O при t =900-1000°
1.2Na+S=Na2S
2.2CH3COOH+Zn =Zn(CH3COO)2 + H2
3.Ba(OH)2+Na2CO3=BaCO3+2NaOH
4.SiO2+2KOH =K2SiO3 + H2O при t =900-1000°