Solutions ­ Chapter 11
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1
1
Which of the following terms is not a quantitative description of a solution?
A
molarity
B
molality
C
mole fraction D
supersaturation
E
% mass
2
2 How many grams of NaCl will be needed in 87.9 g of water to produce a 5.01 m solution?
A
30 g
B
19.4 g
C
29.3 g
D
25.8 g
E
32.5 g
3
3 How many grams of nitric acid, 70.5% by weight, are present in 1500.00 mL of solution with density of 1.42 g/mL?
A
352 g
B
718 g
C
2130 g
D
1250 g
E
1.50 x 103 g
4
4 The mole fraction of calcium chloride in water is 0.326. How many grams of CaCl2 are present in 90.0 g of solution?
A
32.1 g
B
38.1 g
C
50.0 g
D
60.0 g
E
67.5 g
5
5 A solution contains 1300. g of solvent, 40.0 g of solute and is known to be 0.170 molal. What is the molar mass of the solute in g/mol?
A
90 g/mol
B
181 g/mol
C
133 g/mol
D
72.0 g/mol
E
157 g/mol
6
6 What volume of solution is required to prepare a 0.014 M solution containing 1.40 g of FeCl2?
A
0.100 L
B
1.80 L
C
0.79 L
D
0.010 L
E
0.0010 L
7
Which of the following molecules is most soluble in water?
7
A
CCl4
B
CH3NH2
C
HI
D
CH4
E
C 2H 6
8
Which of the following is most soluble in C2H6?
8
A
CH4
B
KI
C
HI
D
CH3NH2
E
H 2O
9
9
The pressure over a liquid at equilibrium.
A
vapor pressure
B
osmotic pressure
C
boiling point D
freezing point
E
molality
10
10 The flow of a solvent into a solution through a semipermeable membrane.
A
vapor pressure
B
osmotic pressure
C
osmosis
D
van't Hoff factor
E
ideal solution
11
11 The temperature at which the vapor pressure of a liquid equals the atmospheric pressure.
A
vapor pressure
B
freezing point
C
boiling point
D
osmosis
E
ideal solution
12
12 How will increasing the pressure of a gas affect the solubility of the gas in a solvent?
A
increase it
B
decrease it
C
no effect
D
depends on the pressure
E
none of the above
13
13 A 10.0 g sample of unknown material is dissolved in 80.0 g of water. Calculate the molar mass of the solute if the solution begins to freeze at ­0.44oC.
A
250 g/mol
B
528 g/mol
C
265 g/mol
D
800 g/mol
E
623 g/mol
14
14 What is the expected van't Hoff factor for Al(OH)3?
A
0
B
1
C
2
D
3
E
4
15
15 What is the boiling point of a solution that is prepared by mixing 500.0 mL of water with 5.844 g of sodium chloride?
A
100.2 oC
B
102.0 oC
C
99.80 oC
D
100.1 oC
E
101.0 oC
16
Answers:
1. D
2. D
3. E
4. E
5. B
6. C
7. C
8. A
9. A
10. C
11. C
12. A
13. B
14. E
15. A
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