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Interactive Quiz 1
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1

Consider the molecular substances I2, H2O, and C8H18. Which of them is/are soluble in CCl4?
A)only I2
B)only H2O
C)only C8H18
D)I2 and C8H18
E)H2O and C8H18
2

Which of the following is not a solution?
A)brass
B)stainless steel
C)solder
D)bronze
E)galvanized iron
3

The heat of solution of KCl is +17 kJ/mol, and the heat of hydration of 1 mole of gaseous chloride ions and 1 mole of gaseous potassium ions is -698 kJ. What is the lattice energy of potassium chloride?
A)715 kJ/mol
B)-681 kJ/mol
C)-715 kJ/mol
D)-332 kJ/mol
E)681 kJ/mol
4

Which of the following statements is true?
A)The solubility of all salts in water increases with temperature.
B)The solubility of all salts in water decreases with temperature.
C)The solubility of all salts in water is independent of temperature.
D)The impact of temperature on solubility depends on the individual salt.
E)Salts are insoluble in water.
5

The solubility of a gas in general _________ with increasing pressure and __________ with increasing temperature.
A)decreases, increases
B)decreases, decreases
C)remains the same
D)increases, increases
E)increases, decreases
6

The molality of a solution of ethyl alcohol, C2H5OH, in water is 0.96 mol/kg. How many grams of alcohol are dissolved in 5.98 kg of water?
A)7.40 g
B)287.2 g
C)74.1 g
D)264.7 g
E)740 g
7

What is the mass of C12H22O11 in 60.0 mL of 0.0880 M solution?
A)0.181 g
B)1.81 g
C)5.02 g
D)5.28 g
E)none of the above
8

The alloy AlNi 120 is 13% Al, 27% Ni, and 60% Fe by weight. What is the mole percent Al for this alloy?
A)24%
B)13%
C)50%
D)32%
E)none of the above
9

What is the molarity of a solution that is 46% by mass perchloric acid (HClO4)? The density of the solution is 1.23 g/mL.
A)5.6 M
B)1.2 M
C)1.7 M
D)7.9 M
E)none of the above
10

What is the percent KCl by mass in a 3.00 molal solution?
A)0.300%
B)12.5%
C)18.3%
D)30.0%
E)none of the above
11

What is the freezing point of a solution that contains 12.0 g of glucose (C6H12O6) in 50 g of acetic acid (CH3COOH). Kf = 3.90°C/m, melting point = 16.6 °C.
A)-1.41°C
B)-31.27°C
C)16.32 °C
D)5.2 °C
E)11.4°C
12

The osmotic pressure of a solution of a synthetic polyisobutylene in benzene was determined at 25 °C. A sample containing 0.30 g of solute per 125 mL of solution developed a rise of 3.4 mm at osmotic equilibrium. The density of the solution was 0.88 g/mL. What is the molar mass of the polyisobutylene?
A)2.1 x 106 g/mol
B)2.4 x 105 g/mol
C)1.2 x 105 g/mol
D)2.9 x 105 g/mol
E)2.0 x 105 g/mol
13

The vapor pressure of pure water at 26 °C is 25.21 torr. What is the vapor pressure of a solution which contains 16.0 g of glucose, C6H12O6, in 80 g of water?
A)16.8 torr
B)24.7 torr
C)0.49 torr
D)25.4 torr
E)14.1 torr
14

The osmotic pressure of a 0.72 M solution of HCl is 35.9 atm at 18°C. Calculate the van't Hoff factor i for HCl at this concentration.
A)67.5
B)4.17
C)33.7
D)0.18
E)2.09
15

Which of the following pairs of phases cannot form a colloidal solution?
A)solid and liquid
B)liquid and gas
C)solid and solid
D)liquid and liquid
E)gas and gas







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