Question

Помогииииииииитттеееееееее​

Answer 1

Ответ:

1)S+O2=SO2

SO2+H2O=H2SO3

H2SO3+2KOH=K2SO3+2H2O

2)4Na+O2=2Na2O

Na2O+H2O=2NaOH

2NaOH+H2SO4=Na2SO4+2H2O

3)2Ca+O2=2CaO

CaO+H2O=Ca(OH)2

Ca(OH)2+2HCl=CaCl2+2H2O

4)K2O+H2O=2KOH

KOH+HNO3=KNO3+H2O