1. Chapter 8 Review

2. Question 8
KOH
Ca(NO3)2
Na2CO3
CCl4
MgBr2

3. Question 11 2ZnS(s) + 3O2(g) 2ZnO(s) + 2SO2(g)
2HCl(aq) + Ba(OH)2(aq) BaCl2(aq) H2O(l)
2HNO3(aq) + Ca(OH)2(aq) Ca(NO3)2 + 2H2O

4. Question 12
Solid zinc sulfide reacts with oxygen gas to form solid zinc oxide and sulfur dioxide gas.
When solid calcium hydride is added to water, aqueous calcium hydroxide and hydrogen gas are formed.
Aqueous silver nitrate mixed with aqueous potassium iodide produces a precipitate of silver iodide and aqueous potassium nitrate.

5. Question 13 H2 + Cl2 2HCl 2Al + Fe2O3 Al2O3 + 2Fe
Pb(CH3COO)2 + H2S PBS + 2CH3COOH

6. Question 14 LiO2 is an incorrect formula H2Cl2 is an incorrect formula
MgO2 is an incorrect formula, and the equation as written is not balanced.
I is an incorrect formula for iodine, and the equation is not balanced.

7. Question 15 4Al + 3O2 2Al2O3 P4O10 + 6H20 4H3PO4
Fe2O3 + 3CO 2Fe + 3CO2

8. Question 16
CH4(g) + 4CL2(g) CCL4(l) + 4HCl(g)

9. Question 17 2Mg + O2 2MgO 4Fe + 3O2 2Fe2O3 2Li + Cl2 2LiCl
Ca + I2 CaI2

10. Question 22
4Na + O2 2Na2O
Mg + F2 MgF2

11. Question 23
2HgO 2Hg + O2
2H2O 2H2 + O2
2Ag2O 4Ag O2
CuCl2 Cu Cl2

12. Question 24 Zn + Pb(NO3)2 Pb + Zn(NO3)2
2Al + 3Hg(CH3COO)2 3Hg + 2Al(CH3COO)3
2Al + 3NiSO4 3Ni Al2(SO4)3
2Na + 2H2O 2NaOH H2

13. Question 25 AgNO3 + NaCl NaNO3 + AgCl Mg(NO3)2 + 2KOH Mg(OH)2 + 2KNO3
3LiOH + Fe(NO3)3 Fe(OH) LiNO3