Написать уравнения реакций по цепочкам превращений: Mg---MgO---Mg(OH)2---MgCL2; Fe(OH)3----Fe2O3----FeCl3; ZnO---ZnSO4---Zn(OH)2---ZnO.
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1)2Mg+O2-->2MgO
MgO+H2O-->Mg(OH)2
Mg(OH)2+2HCl--->MgCl2+2H2O
2)
2Fe(OH)3--->Fe2O3+3H2O
Fe2O3+6HCl---->2FeCl3+3H2O
3)
ZnO+H2SO4--->ZnSO4+H2O
ZnSO4+2NaOH--->Zn(OH)2+Na2SO4.
Zn(OH)2--->ZnO+H2O