1. . NaCl is dissolved in water. Which of the following statements is incorrect? (a) Boiling point of the solution is increased (b) Freezing point of the solution is deceased (c) Vapor pressure of the solution is decreased (d) The solution will boil at 100'C as NaOH is a volatile solute 2. 20 grams of NAOH dissolved in 500 ml of water, molarity of the solution is ? (a) 2M (c) 1.4M (b) IM (d) 4M 3. The flow of solvent molecules into solution through a semi permeable membrane is called (a) osmosis (b) viscosity (e) fugacity (d) diffusion

1. . NaCl is dissolved in water. Which of the following statements is incorrect? (a) Boiling point of the solution is increased (b) Freezing point of the solution is deceased (c) Vapor pressure of the solution is decreased (d) The solution will boil at 100'C as NaOH is a volatile solute 2. 20 grams of NAOH dissolved in 500 ml of water, molarity of the solution is ? (a) 2M (c) 1.4M (b) IM (d) 4M 3. The flow of solvent molecules into solution through a semi permeable membrane is called (a) osmosis (b) viscosity (e) fugacity (d) diffusion

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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Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

1.
NaCl is dissolved in water. Which of the following
statements is incorrect?
(a) Boiling point of the solution is increased
(b) Freezing point of the solution is deceased
(c) Vapor pressure of the solution is decreased
(d) The solution will boil at 100'C as NaOH is a volatile
solute
2.
20 grams of NaOH dissolved in 500 ml of water,
molarity of the solution is ?
(a) 2M
(c) 1.4M
(b) IM
(d) 4M
3. The flow of solvent molecules into solution through a
semi permeable membrane is called
(a) osmosis
(b) viscosity
(c) fugacity
(d) diffusion
4. The mole fraction of solute is 0.5, then mole fraction of
solvent is
(a) 0.6
(c) mole fraction of solvent -1
5. Which molecules has highest boing point?
(а) Н,о
(b) 0.5
(d) 0.4
(b) снон
(c) H,S
(d) NH,
6. If adhesive force of solvent is higher than cohesive force,
which of the statement is correet?
shape of the meniscus of the solvent will be
(a)
concave (down side)
(b)
shape of
the meniscus of the solvent will be convex (upside)

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