Question

5. Calculate the vapor pressure of a solution made by dissolving a 2.33-gram sample of anthracene, C14H10, in 250.0 mL of toluene, C7H8, at 31.8°C. The vapor pressure of pure toluene is 5.332 kPa at this temperature. Take the density of toluene to be 0.867 g·mL-1. Anthracene is nonvolatile. A) 2.25 kPa B) 5.30 kPa C) 5.33 kPa D) 6.22 kPa 6. Calculate the boiling point of a 2.50-m aqueous solution of sucrose, C12H22O11, to two decimal places. The normal boiling point of water is 100.00°C. The value of Kb for water is 0.513 K·mc-1. A) 100.00°C B) 100.51°C C) 101.28°C D) 102.95°C 7. Calculate the freezing point of a solution of 21.2 grams of SrCl2 dissolved in 0.250 kg of water. The normal freezing point of water is 0.00°C. The value of Kf for water is 1.86 K·mc-1. A) -0.248°C B) -1.10°C C) -2.98°C D) -0.99°C

          5. Calculate the vapor pressure of a solution made by dissolving a 2.33-gram sample of
anthracene, C14H10, in 250.0 mL of toluene, C7H8, at 31.8°C. The vapor pressure of pure
toluene is 5.332 kPa at this temperature. Take the density of toluene to be 0.867 g·mL-1.
Anthracene is nonvolatile.
A) 2.25 kPa
B) 5.30 kPa
C) 5.33 kPa
D) 6.22 kPa

6. Calculate the boiling point of a 2.50-m aqueous solution of sucrose, C12H22O11, to two
decimal places. The normal boiling point of water is 100.00°C. The value of Kb for water is
0.513 K·mc-1.
A) 100.00°C
B) 100.51°C
C) 101.28°C
D) 102.95°C

7. Calculate the freezing point of a solution of 21.2 grams of SrCl2 dissolved in 0.250 kg of
water. The normal freezing point of water is 0.00°C. The value of Kf for water is 1.86
K·mc-1.
A) -0.248°C
B) -1.10°C
C) -2.98°C
D) -0.99°C

5. Calculate the vapor pressure of a solution made by dissolving a 2.33-gram sample of
anthracene, C14H10, in 250.0 mL of toluene, C7H8, at 31.8°C. The vapor pressure of pure
toluene is 5.332 kPa at this temperature. Take the density of toluene to be 0.867 g·mL-1.
Anthracene is nonvolatile.
A) 2.25 kPa
B) 5.30 kPa
C) 5.33 kPa
D) 6.22 kPa

6. Calculate the boiling point of a 2.50-m aqueous solution of sucrose, C12H22O11, to two
decimal places. The normal boiling point of water is 100.00°C. The value of Kb for water is
0.513 K·mc-1.
A) 100.00°C
B) 100.51°C
C) 101.28°C
D) 102.95°C

7. Calculate the freezing point of a solution of 21.2 grams of SrCl2 dissolved in 0.250 kg of
water. The normal freezing point of water is 0.00°C. The value of Kf for water is 1.86
K·mc-1.
A) -0.248°C
B) -1.10°C
C) -2.98°C
D) -0.99°C

Added by Anthony S.

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