   Chapter 15, Problem 80QAP ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

#### Solutions

Chapter
Section ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
1 views

# 80. For each of the following solutions, the mass of solute taken is indicated, along with the total volume of solution prepared. Calculate the normality of each solution. a. 0.113g NaOH; 10.2 mL b. 12.5 mg Ca(OH)2: l00.mL c. 12.4 g H2SO4: 155 mL

Interpretation Introduction

(a)

Interpretation:

The normality of the given solution is to be calculated.

Concept Introduction:

The normality of a solution is defined as the gram equivalent weight of a solute dissolved in one liter of the solution. The normality of solution is given as,

N=neqV

Where,

• neq represents the number of equivalents of the solute.
• V represents the volume of the solution.
Explanation

The mass of NaOH dissolved in solution is 0.113g.

The volume of the NaOH solution is 10.2mL.

The molar mass of NaOH is 39.9979gmol1.

The dissociation reaction of NaOH in water is represented as,

NaOHaqNa+aq+OHaq

The number of OH ion released by NaOH is 1.

Hence the equivalence factor of NaOH is 1eqmol1.

The equivalent mass of a substance is given as,

Meq=Mmn

Where,

• Mm represents the molar mass of the substance.
• n represents the equivalence factor of the substance.

Substitute the value of Mm and n in the above equation.

Meq=39.9979gmol11eqmol1=39

Interpretation Introduction

(b)

Interpretation:

The normality of the given solution is to be calculated.

Concept Introduction:

The normality of a solution is defined as the gram equivalent weight of a solute dissolved in one liter of the solution. The normality of solution is given as,

N=neqV

Where,

• neq represents the number of equivalents of the solute.
• V represents the volume of the solution.
Interpretation Introduction

(c)

Interpretation:

The normality of the given solution is to be calculated.

Concept Introduction:

The normality of a solution is defined as the gram equivalent weight of a solute dissolved in one liter of the solution. The normality of solution is given as,

N=neqV

Where,

• neq represents the number of equivalents of the solute.
• V represents the volume of the solution.

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