Question

Помогите пожалуйста!!!

Answer 1

S+O2=SO2
SO2+H2O=H2SO4
H2SO4+2NaOH=Na2SO4+2H2O
Na2SO3       =SO2  ????

Fe+2HCl=FeCl2+H2
FeCl2+2NaOH=Fe(OH)2+2NaCl
Fe(OH)2=FeO+H2O

4Al+3O2=2Al2O3
Al2O3+3H2SO4=Al2(SO4)3+3H2O
Al2(SO4)3+6NaOH=3Na2SO4+2Al(OH)3
Al(OH)3+NaOH=Na(Al(OH)4)
Al(OH)3+3HCl=AlCl3+3H2O
2AlCl3+3Ca=3CaCl2+2Al
Al2O3+3HCl=2AlCl3+3H2O