b) k is a constant which depends on temperature and the nature of solvent. c) k is a constant only depends on the nature of solvent when concentration is very low, d) k is a constant depends on the nature of both solute and solvent. Question 27 Choose the right statement. At constant pressure. the concentration of a solution (contains non-vapor solute and does not make solid substances with solvent) increase, then: b) Boiling point decreases. d) a and c are correct. a) Boiling point increases. c) Freezing points decreases. Question 28 At 25°C, the saturated vapor pressure of pure water is 23.76mHg. When 2.7 mol of glycerine (C;HO;) is dissolved into 100 mol of H;O at the same temperature, the saturated vapor pressure of the solution decrease to: a) 23.13mmHg c) 0.62mmHg b) 0.64mmHg d) 23.10mmHg Question 29 There is a solution of non-electrolyte, and non-vapor solute in water which boils at 373.52 K. The molality concentration of this solution is (With k-0.52) a) 0.01 b) 1.0 c) 10 d) 0.1 Question 30 Calculate the osmosis pressure of 100 g solution 20% of glycerine in water at 25°C: a) 1 atm b) 0.1 atm c) 0.025 atm d) Other result
b) k is a constant which depends on temperature and the nature of solvent. c) k is a constant only depends on the nature of solvent when concentration is very low, d) k is a constant depends on the nature of both solute and solvent. Question 27 Choose the right statement. At constant pressure. the concentration of a solution (contains non-vapor solute and does not make solid substances with solvent) increase, then: b) Boiling point decreases. d) a and c are correct. a) Boiling point increases. c) Freezing points decreases. Question 28 At 25°C, the saturated vapor pressure of pure water is 23.76mHg. When 2.7 mol of glycerine (C;HO;) is dissolved into 100 mol of H;O at the same temperature, the saturated vapor pressure of the solution decrease to: a) 23.13mmHg c) 0.62mmHg b) 0.64mmHg d) 23.10mmHg Question 29 There is a solution of non-electrolyte, and non-vapor solute in water which boils at 373.52 K. The molality concentration of this solution is (With k-0.52) a) 0.01 b) 1.0 c) 10 d) 0.1 Question 30 Calculate the osmosis pressure of 100 g solution 20% of glycerine in water at 25°C: a) 1 atm b) 0.1 atm c) 0.025 atm d) Other result
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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b) k is a constant which depends on temperature and the nature of solvent.
c) k is a constant only depends on the nature of solvent whem concentration is
very low,
d) k is a constant depends on the nature of both solute and solvent.
Question 27 Choose the right statement. At constant pressure, the concentration of a
solution (contains non-vapor solute and does not make solid substances with solvent)
increase, then:
b) Boiling point decreases.
d) a and c are correct.
a) Boiling point increases.
c) Freezing points decreases.
Question 28 At 25°C, the saturated vapor pressure of pure water is 23.76mHg. When 2.7
mol of glycerine (C3HsO3) is dissolved into 100 mol of H;O at the same temperature, the
saturated vapor pressure of the solution decrease to:
a) 23.13 mmHg
c) 0.62mmHg
b) 0.64mmHg
d) 23.10mmHg
Question 29 There is a solution of non-electrolyte, and non-vapor solute in water which
boils at 373.52 K. The molality concentrațion of this solution is (With k=0.52)
a) 0.01
b) 1.0
c) 10
d) 0.1
Question 30 Calculate the osmosis pressure of 100 g solution 20% of glycerine in water
at 25°C:
a) 1 atm
b) 0.1 atm
c) 0.025 atm
d) Other result
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