Pitt Quiz
1. What volume of a .30 M solution of sodium chloride contains 3.7 g of the salt?
a. 12 L
b. 1.1 L
c. 19 mL
d. 65 L
e. 210 mL
2. Which of the following solutions has the highest total concentration of ions?
a. 1 mol AlCl3 in 3 L water
b. 3 mol KCl in 2 L water
c. 1 mol NaCl in 2 L water
d. 2 mol KCl in 1 L water
e. 2 mol MgCl2 in 1 L water
3. How many moles of silver chloride can be obtained at most by the reaction of
30.00 mL of a .100 M solution of silver nitrate with excess hydrochloric acid?
a. .003 mol
b. .100 mol
c. 30.00 mol
d. .030 mol
e. .300 mol
4. An electrolyte is
a. a solute that releases ions in solution
b. a substance rich in electrons
c. an insulator
d. a solute that does not conduct electricity in water
e. an insoluble compound
5. 22.0 mL of an aqueous solution of sulfuric acid reacts completely with 45.7 mL of
.27 M sodium hydroxide. How many moles of sulfuric acid were in solution?
a. 280 mmol
b. 12 mmol
c. 6.2 mmol
d. 140 mmol
e. 240 mmol
6. What is an aqueous solution?
a. pure water
b. a solution in which water is the solvent
c. a heterogeneous mixture containing water
d. a bluish liquid
e. a mixture of ice and water
7. Tincture of iodine is an antiseptic solution used to disinfect superficial wounds. A
typical formulation contains 7% iodine by volume, 5% potassium iodide by
volume, and 82% isopropyl alcohol by volume in water. Which component is the
solvent?
a. iodine
b. iodide
c. water
d. isopropyl alcohol
e. none
8. How many moles of sodium chloride are require to prepare 4.0 x 102 mL of a .25
M solution.
a. .16 mol
b. 1.6 mol
c. 1.0 mol
d. .10 mol
e. 1.0 x 102 mol
9. How many moles of glucose (C6H12O6) are contained in 350 mL of a solution of
glucose that is 8% by mass? The density of the solution is 1.03 g mL-1.
a. .520 mol
b. .444 mol
c. .151 mol
d. .155 mol
e. .160 mol
10. Sucrose (.33 mol) is dissolved in water to form 1500 mL of solution. The
concentration of this solution is
a. .22 M
b. .50 M
c. 2.2 M
d. 220 M
e. 500 M
11. 250 mL of an aqueous solution of sodium chloride is evaporated to dryness. The
residue has a mass of 450 mg. What is the concentration of the solution?
a. 1.8 M
b. .031 M
c. 110 M
d. .11 M
e. 1.9 x 10-3 M
12. Barium sulfate is insoluble in water. 20 mL of .32 M barium nitrate is mixed with
10 mL of .48 M sodium sulfate. Which of the following statements is(are) correct
about the resulting solution? Na2SO4 lim/Ba in excess
1) There are practically no barium ions left in solution
2) There are practically no sulfate ions left in solution
3) Barium ions are in the excess
a. 1
b. 2
c. 3
d. 1 & 2
e. 2 & 3
13. The solubility of potassium chlorate is 10 g in 100 mL of water at 30°C. Which
of the statements is not correct.
a. a solution of 5 g potassium chlorate in 100 mL of water at 30°C is not
saturated.
b. 5 g potassium chlorate in 50 mL of water at 30°C forms a saturated
solution
c. 11 g potassium chlorate cannot dissolve entirely in 100 mL of water at
30°C
d. 200 mL of water at 30°C forms a saturated solution with 20 g of
potassium chlorate
e. All are correct
14. How many moles of chloride ions are contained in 10 mL of a .1M solution of
magnesium chloride?
a. .001 mol
b. .002 mol
c. .005 mol
d. .01 mol
e. .02 mol
15. In a solution containing 2 components, the solvent is
a. water
b. the component in the higher quantity
c. the component used first
d. the component that dissolves the other
e. none