Exploring Chemical Analysis
Exploring Chemical Analysis
5th Edition
ISBN: 9781429275033
Author: Daniel C. Harris
Publisher: Macmillan Higher Education
Question
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Chapter 12, Problem 12.27P

(a)

Interpretation Introduction

Interpretation:

Mass balance equation for Mg2+ present in 0.20 MMgBr2 has to be written.

Concept Introduction:

Mass balance equation represents net quantity of all such species in solution that have specific atoms must remain equal to total quantity of atoms added or delivered to the system initially.

For example if 0.020 mol of acetic acid has been dissolved in 1 L solvent to form 0.020 M CH3COOH solution, then after dissolution, amount of unionized and ionized acetic acid must remain equal to 0.020 M.

  0.020 M=[CH3COO]+[CH3COOH]

For any systematic equilibrium there might be more than one mass balance equations unlike charge balance equation. Such equations are governed by possible products species.

(b)

Interpretation Introduction

Interpretation:

Mass balance equation for Br present in 0.20 MMgBr2 has to be written.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

Mass balance equation for Mg2+ present in 0.20 MMgBr2 when MgBr+ is also formed has to be written.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

Mass balance equation for Br present in 0.20 MMgBr2 when MgBr+ is also formed has to be written.

Concept Introduction:

Refer to part (a).

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