1)S+O2=SO2
2)SO2+H2O=H2SO3
3)H2SO3+2NaOH=Na2SO3+2H2O
4)тут не знаю
5)H2SO3+K2O=K2SO3+H2O
S + O2 = SO2
SO2 + H2O = H2SO3
H2SO3 + 2NaOH = Na2SO3 + 2H2O
Na2SO3+H2O=H2SO3+NaOH
К2О + H2SО3=K2SО3+H2О
1)S+O2=SO2
2)SO2+H2O=H2SO3
3)H2SO3+2NaOH=Na2SO3+2H2O
4)тут не знаю
5)H2SO3+K2O=K2SO3+H2O
S + O2 = SO2
SO2 + H2O = H2SO3
H2SO3 + 2NaOH = Na2SO3 + 2H2O
Na2SO3+H2O=H2SO3+NaOH
К2О + H2SО3=K2SО3+H2О