SCH4U
Chemistry Review - Solutions
Stoichiometry
1. Write a balanced chemical equation for each of the following.
a. When aqueous beryllium chloride reacts with aqueous silver nitrate in water, aqueous
beryllium nitrate and a silver chloride precipitate are made.
[BeCl2(aq) + 2AgNO3(aq)  Be(NO3)2(aq) + 2AgCl(s)]
b. When isopropanol (C3H8O) burns in oxygen, carbon dioxide, water, and heat are produced.
[C3H8O(g) + O2(g)  CO2(g) + H2O(l) + energy]
c. When aqueous sodium hydroxide reacts with sulfuric acid (H2SO4), aqueous sodium sulfate,
water, and heat are formed.
[2NaOH(aq) + H2SO4(aq)  Na2SO(aq) + 2H2O(l) + energy]
2. Write a word equation for each of the following skeleton equations. Also, balance each equation.
a. Al (s) + O2 (g)  Al2O3 (s)
[Aluminum metal is oxidized by oxygen to form aluminum oxide]
b. C2H6 (g) + O2 (g)  CO2 (g) + H2O (g)
[Ethane gas undergoes complete combustion]
c. Fe2O3
(s) +
H2SO4 (aq)  Fe2(SO4)3 (aq) + H2O (l)
[Iron (III) oxide reacts with sulphuric acid to produce iron (III) sulphate and water]
d. CO2 (g) + H2 (g)  CH4 (g) + H2O (g)
[Carbon dioxide reacts with hydrogen to produce methane gas and water vapour]
3. Complete the following
a. 3.4 moles of iron (II) hydroxide is equal to 250 g of iron (II) hydroxide.
b. 132.34 g of NaOH is equal to 3.308 moles of NaOH.
4. Determine the mass of solid copper (II) chloride needed to prepare 1.0 L of 0.5 M copper (II) chloride.
[Dissolve 68 g of CuCl2 in about 800 mL water then make up to a final volume of 1.0 L]
5. Describe how 250 mL 0.35 M solution of a sodium hydroxide could be prepared using 1 M sodium
hydroxide and distilled water. [Dilute 88 mL of 1M NaOH to 250 mL with water]
6. Prepare a detailed procedure for the preparation of a 0.45 M solution of lithium nitrate using solid
lithium nitrate, distilled water and any glassware necessary. (Use the correct name for all
glassware/instruments).
7. Using the following equation:
2 NaOH + H2SO4  2 H2O + Na2SO4
How many grams of sodium sulfate will be formed if you start with 200 g of sodium hydroxide and you
have an excess of sulfuric acid? [355 g Na2SO4]
SCH4U
8. How many grams of lithium nitrate will be needed to make 250 grams of lithium sulfate, assuming that
you have an adequate amount of lead (IV) sulfate to do the reaction?
[4 LiNO3 + Pb(SO4)2  2 Li2SO4 + Pb(NO3)4 313 g LiNO3]
9. Determine the mass of aluminum acetate that can be made if 125 grams of acetic acid and 275 grams
of aluminum hydroxide are mixed.
[3 CH3COOH + Al(OH)3  Al(CH3COO)3 + 3 H2O
177g]
10. Determine the volume of 0.100 M HCl required to react completely with 5.00 grams of calcium
hydroxide?
[2 HCl + Ca(OH)2  CaCl2 + 2 H2O
1.35 L]
11. If 15.0 grams of calcium hydroxide is combined with 75.0 mL of 0.500 M HCl, how many grams of
calcium chloride would be formed? [2.08 g CaCl2]
Periodic Table
1.
Define and relate to the periodic table the following terms.
a. Electronegativity –
b. Valence –
c. Stability –
2.
On the periodic table identify:
a. solids/liquids/gasses
b. metals/non-metals/semi-conductors
c. diatomics
d. families