Question

H2so4-mgso4-mg(oh2)2-mg oh Cl. Mg cl 2

Answer 1

H2SO4->MgSO4->Mg(OH)2->MgOHCl->MgCl2
1)MgO+H2SO4=MgSO4+H2O
2)MgSO4+2NaOH=Mg(OH)2+Na2SO4
3)Mg(OH)2 + HCl= MgOHCl + H2O
4)MgOHCl + HCl = MgCl2 + H2O