AP QUIZZES - AP TOPIC 17 Colligative Properties SET B
AP Quizzes - AP TOPIC 17 Colligative Properties SET B.
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QUESTION 1. Calculate the Molar Mass of an ionic substance with a van't Hoff factor of 2.000, that, when 29.25 g of it is dissolved in 1.000 kg of water, the freezing point of the water drops by 1.860
o
C. (The molal freezing point depression constant for water is 1.860
o
C/m).
(A) 1.000
(B) 2.000
(C) 58.50
(D) 29.25
(E) 1.860
QUESTION 2. Which of the following substances has a van't Hoff factor equal to 1?
(A) NaCl
(B) KCl
(C) Ethanol
(D) MgCl
2
(E) Ethanoic Acid
QUESTION 3. When salt is dissolved in water, which of the following quantities increases in value?
(A) Boiling Point and Freezing Point
(B) Freezing Point
(C) Boiling Point
(D) Vapor Pressure and Boiling Point
(E) Vapor Pressure and Freezing Point
QUESTION 4. What is the boiling point of a 4.00 m solution of KCl in water? (The molal boiling point elevation constant for water is 0.500
o
C/m).
(A) 373 K
(B) 369 K
(C) 273 K
(D) 377 K
(E) None of the above
QUESTION 5. Benzene has a higher vapor pressure than Methylbenzene. Which compound has the higher boiling point?
(A) Benzene
(B) Methylbenzene
(C) They are the same
(D) It is not possible to tell from the information given
(E) None of the above
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