Question

SO 2 + H2O= ________
Na +O2=________
Fe+CuSO4=_______
Zn+H2SO4=______
2Cu+H2O+O2+CO2=______
Mg+O2=______

Answer 1

1)-so3+h2
2)-na+o2----->na2o
3)-feso4+h2
4)-znso4+h2
6)-2mg+o2------->2mgo
sorry not confirmed about 5th but the ans might be
2cu(oh)2+co2

Answer 2

SO2 + H2O => H2SO3
2Na + O2 => Na2O2
Fe + CuSO4 => Cu + FeSO4
Zn + H2SO4 => H2 + ZnSO4
Cu + H2O + O2 + CO2 => CuCO3Cu(OH)2
Mg + O2 => MgO