AP Chemistry Winter Intersession Assignment
Memorize the names, formulas and charges on the following ions. You should also know how to combine
them to form compounds. You should also know the charges and names of all main-group element ions
on the periodic table.
Common Ions
cations
+
NH4
Ag+
Zn2+
1-
ammonium
silver
zinc
CH3COO
OHNO3NO2CNMnO4-
-
acetate
hydroxide
nitrate
nitrite
cyanide
permanganate
22-
CO3
SO42SO32-
carbonate
sulfate
sulfite
3PO4
3-
phosphate
Memorize the formulas and names of the following strong acids and strong bases. We will be working
with acids and bases for the majority of the third quarter and this will be essential.
You must remember that ionic compound containing the following ions are ALWAYS water soluble:
Group I cations, NH4+, NO3-, or CH3COOLastly you must remember the following elements always exist in a DIATOMIC state (a molecule of two
atoms): H2,
O2, N2, F2, Cl2, Br2, I2
Types of Reactions: For each of the following reactions write the complete ionic and net ionic equations.
Metal Redox Reactions
1. Solid zinc is added to a solution of copper (II) chloride.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
2. Manganese metal is oxidized by a solution of cobalt (II) nitrate.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
3. A solution of iron (III) ion is reduced to iron (II) by solid lead.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
Reactions between metals and acids
4. Hydrobromic acid is added to a beaker containing chromium metal.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
5. A piece of magnesium metal is placed in a solution of sulfuric acid.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
6. Zinc metal is oxidized by a solution of nitric acid.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
Nonmetal Redox
7. Chlorine gas is reduced when it is bubbled through a solution of potassium iodide.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
8. Aqueous sodium iodide is combined with liquid bromine.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
Precipitation Reactions
9. Aqueous zinc nitrate is combined with a solution of sodium carbonate and a precipitate forms.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
10. Aqueous ammonia chloride is mixed with an aqueous solution of silver nitrate.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
11. A barium acetate solution is combined with a solution of calcium sulfate and a precipitate forms.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
Strong Acid – Strong Base Reactions
12. Aqueous perchloric acid reacts with an aqueous solution of sodium hydroxide.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
13. Aqueous hydrochloric acid reacts with an aqueous solution of calcium hydroxide.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
14. Aqueous sulfuric acid reacts with a solution of potassium hydroxide.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
15. Solid sodium hydroxide is added to a solution of nitric acid.
Complete Ionic Equation: _________________________________________________________
Net Ionic Equation: ______________________________________________________________
Empirical Formulas
16. Allicin is the compound responsible for the characteristic smell of garlic. An analysis of the
compound gives the following percent composition by mass: C – 44.4%, H – 6.21%, S – 39.5%,
and O – 9.86%. Calculate its empirical formula. What is its molecular formula given that its
molar mass is about 162 g?
17. Peroxyacylnitrate (PAN) is one of the components of smot. It is acompound of C, H, N and O.
Determine the percent composition of oxygen and the empirical formula from the following
percent composition by mass: 19.8 percent C, 2.50 percent H, 11.6 percent N. What is the
molecular formula given its molar mass is about 120 g/mol?
18. What are the empirical formulas of the compounds with the following compositions?
a. 40.1 percent C, 6.6 percent H, 53.3 percent O.
b. 18.4 percent C, 21.5 percnet N, 60.1 percent K
c. 2.1% H, 65.3% O, 32.6% S
d. 20.2% Al, 79.8 % Cl