   Chapter 15, Problem 81QAP ### 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

# 81. Calculate the normality of each of the following solutions. a. 0.250 M HCI b. 0.105 M H2SO4c. 5.3 × 10 − 2 M H3PO4

Interpretation Introduction

(a)

Interpretation:

The normality of the given solution is to be calculated.

0.250M

HCl.

Concept Introduction:

The atomic mass of an element is defined as the sum of number of protons and number of neutrons. Molar mass of an element is determined from atomic mass of an element.

The number of moles is calculated by the formula,

Moles=MassgMolarmass

The molarity is calculated by the formula,

Molarity=NumberofmolesofsoluteVolumeofsolutionL

The normality of the solution is calculated by the formula,

Normality=Molarity×NumberofH+orOHions.

Explanation

The molarity of HCl solution is given to be 0.250M. One equivalent of hydrochloric acid produces one mole of H+ ion.

The normality of HCl solution is calculated by the formula,

Normality=Molarity×NumberofH+

Interpretation Introduction

(b)

Interpretation:

The normality of the given solution is to be calculated.

0.105M

H2SO4.

Concept Introduction:

The atomic mass of an element is defined as the sum of number of protons and number of neutrons. Molar mass of an element is determined from atomic mass of an element.

The number of moles is calculated by the formula,

Moles=MassgMolarmass

The molarity is calculated by the formula,

Molarity=NumberofmolesofsoluteVolumeofsolutionL

The normality of the solution is calculated by the formula,

Normality=Molarity×NumberofH+orOHions.

Interpretation Introduction

(c)

Interpretation:

The normality of the given solution is to be calculated.

5.3×102M

H3PO4.

Concept Introduction:

The atomic mass of an element is defined as the sum of number of protons and number of neutrons. Molar mass of an element is determined from atomic mass of an element.

The number of moles is calculated by the formula,

Moles=MassgMolarmass

The molarity is calculated by the formula,

Molarity=NumberofmolesofsoluteVolumeofsolutionL

The normality of the solution is calculated by the formula,

Normality=Molarity×NumberofH+orOHions.

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