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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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Section
BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 12, Problem 12E
Textbook Problem
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Define each of the following:

a. solution

b. solvent

c. solute

d. molarity

e. ppm

f. mg/L

Interpretation Introduction

Interpretation:

The terms ‘solution’, ‘solvent’, ‘solute’, ‘molarity’, ‘ppm’ and ‘mg/L’ are to be defined.

Concept Introduction:

The substance that is dissolved is known as a solute. The substance that the solute is dissolved in is called solvent. Solute and solvent together make a solution.

The concentration (molarity) of a solution is given by:

M=nV

Here, n is the number of moles and V is the volume of the solution.

Explanation of Solution

a) Solution

A solution is defined as a homogeneous mixture of two or more substances. Homogeneous mixtures are those mixture that maintain the same proportions of the solute and the solvent throughout the sample. The solution consists of a solute and a solvent. Example - Dissolving sugar in water forms a sugar solution.

b) Solvent

A solvent is a substance that can dissolve other substances in it. It is present in a large amount as compared to the solute. The solvent disperses the solute. Example - in a sugar solution, water is used in a large amount and can dissolve sugar in it. So, water acts as a solvent.

c) Solute

A solute is a substance that is dissolved in any other substance. It is present in a small amount as compared to the solvent and gets dispersed by the solvent. Example - in a sugar solution, sugar is used in a small amount and is dissolved in water. So, sugar acts as a solute.

d) molarity

The concentration (molarity) of a solution is given by the number of moles per unit volume. It is given by the equation as follows:

M=nV

Here, n is the number of moles and V is the volume of the solution.

The S.I. unit of concentration (molarity) is mol/L or M.

e) ppm

Parts per million parts is defined as the mass of solute present in one million parts by the mass of the solution

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Chapter 12 Solutions

Chemistry In Focus
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