EBK EXPLORING CHEMICAL ANALYSIS
EBK EXPLORING CHEMICAL ANALYSIS
5th Edition
ISBN: 9781319416942
Author: Harris
Publisher: VST
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Chapter 8, Problem 8.1P

(a)

Interpretation Introduction

Interpretation:

The conjugate acid-base pairs for the reversible reaction of formic acid with cyanide ion have to be identified.

Concept Introduction:

Bronsted-Lowry acid: According to Brønsted-Lowry theory, an acid is a proton donor.

Bronsted-Lowry base: According to Brønsted-Lowry theory, a base is a proton acceptor.

When a Brønsted-Lowry acid donates a proton to a Brønsted-Lowry base, the base that

accepts the proton becomes a conjugate acid.  Contrastingly, the acid that donated the

proton becomes a conjugate base.

    HX + Y HY++ X-Acid Base Conjugateacid Conjugatebase HY+andYareConjugateacid-basepairHXandX-areConjugateacid-basepair

(a)

Expert Solution
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Explanation of Solution

Since formic acid is a Bronsted-Lowry acid, it donates proton when it reacts with cyanide ion The chemical reaction of formic acid with cyanide and conjugate acid-base pairs are given by

    CN-+HCOOHHCN+HCO2-HCOOHandHCO2-conjugateacid-basepairHCNandCN-conjugateacid-basepair

(b)

Interpretation Introduction

Interpretation:

The conjugate acid-base pairs for the reversible reaction of methyl amine with water have to be identified.

Concept Introduction:

Refer to part (a).

(b)

Expert Solution
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Explanation of Solution

Since methyl phosphate ion is a Bronsted-Lowry base, it accepts proton when it reacts with water.  The chemical reaction between phosphate ion and water and conjugate acid-base pairs are given by

    PO43-+H2OHPO42-+OH-PO43-andHPO42-areconjugate acid-base pairH2OandOH-areconjugate acid-base pair

(c)

Interpretation Introduction

Interpretation:

The conjugate acid-base pairs for the reversible reaction of sulphite ion with hydroxide ion have to be identified.

Concept Introduction:

Refer to part (a).

(c)

Expert Solution
Check Mark

Explanation of Solution

Since sulphate ion is a Bronsted-Lowry acid, it donates proton when it reacts with hydroxide The chemical reaction between sulphite ion with hydroxide ion and conjugate acid-base pairs are given by

    HSO3-+OH-SO32-+H2OPO43-andHPO42-areconjugate acid-base pairH2OandOH-areconjugate acid-base pair

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General Chemistry | Acids & Bases; Author: Ninja Nerd;https://www.youtube.com/watch?v=AOr_5tbgfQ0;License: Standard YouTube License, CC-BY