NAME_________________________________
PER_________
Chapter 12 Practice Test
(Show your Work, answers to the first decimal place)
1.
How many moles of oxygen, O2, can be formed by the decomposition of 9 moles
of Nickel (III) oxide, Ni2O3?
2 Ni2O3 → 4 Ni + 3 O2
2.
How many grams of potassium fluoride would form if 22.5 moles of aluminum
fluoride was reacted with excess potassium?
AlF3 + 3 K 
3.
Al + 3 KF
Suppose that an excess of propane, C3H8 burns to produce 120 g of H2O. How
many moles of O2 were required?
C3H8 + 5 O2 → 3 CO2 + 4 H2O
4.
How many grams of aluminum chloride are required to completely react with 135
grams of sodium carbonate according to the following reaction?
3 Na2CO3 + 2 AlCl3  6 NaCl + Al2(CO3)3
NAME_________________________________
PER_________
5.
Consider the following reaction: 4 Al + 3 O2 → 2 Al2O3
When 10 moles of Al reacts with 7 moles of O2, what are the limiting and excess
reactants?
6.
Given the following equation: 2 CoCl3 + 3 H2SO4  6 HCl + Co2(SO4)3
If 100 g of CoCl3 is reacted with 135 g of H2SO4, determine the limiting and
excess reactants.
7.
Calculate the theoretical and percent yield of PCl3 that results from reacting 5 g
of P with excess Chlorine gas if only 17.2 g of PCl3 was isolated?
2 P + 3 Cl2  2 PCl3
8.
Given the following reaction: 2 Ag3PO4 + Ti2(CrO4)3  3 Ag2CrO4 + 2 TiPO4
If I perform this reaction with 130 g of Silver phosphate and 70 g of Titanium (III)
chromate, what is my theoretical yield in grams of Silver chromate? If the
reaction results in 125 g of Silver chromate, what is my percent yield?