1. Zn(OH)2+2HCl=2H2O+ZnCl2
2. ZnCl2+2AgNO3=2AgCl↓+Zn(NO3)2
3. Mg+Zn(NO3)2=Zn↓+Mg(NO3)2
4. Mg(NO3)2+2NaOH=2NaNO3+Mg(OH)2↓
5. Mg(OH)2=t=MgO+H2O
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Answers & Comments
1. Zn(OH)2+2HCl=2H2O+ZnCl2
2. ZnCl2+2AgNO3=2AgCl↓+Zn(NO3)2
3. Mg+Zn(NO3)2=Zn↓+Mg(NO3)2
4. Mg(NO3)2+2NaOH=2NaNO3+Mg(OH)2↓
5. Mg(OH)2=t=MgO+H2O