MgO→MgSO4→Mg(NO3)2→Mg(OH)2→MgCl2

Question

MgO→MgSO4→Mg(NO3)2→Mg(OH)2→MgCl2

Answer 1

MgO+H2SO4=MgSO4+H2O

MgSO4+2HNO3=Mg(NO3)2+H2SO4

Mg(NO3)2+H2O=Mg(OH)2+HNO3

Mg(OH)2+2HCl=MgCl2+H2O