
Concept explainers
(a)
Interpretation:
A chemical equation for the given information has to be written and the conjugate acid, base has to be identified.
Concept introduction:
Acid:
According to Bronsted-Lowry theory, a species which donates a proton in a proton transfer-reaction is said to be an acid.
Base:
According to Bronsted-Lowry theory, a species which accepts a proton in a proton transfer-reaction is said to be base.
Conjugated acid:
In the conjugate acid-base pair, a species which can donates a proton is said to be conjugated acid.
Conjugated base:
In the conjugate acid-base pair, a species which can accepts a proton is said to be conjugated base.
(a)

Answer to Problem 15.109QP
The chemical equation and its conjugate acid, base is
[Al(H2O)63+] + NH3 → [Al(H2O)52+ OH]+ NH4+acid base base acid
The conjugate acid-base pairs are ([Al(H2O)6]3+, [Al(H2O)5OH]2+ ) and (NH4+,NH3)
Explanation of Solution
The hydrated aluminum ion acts as Bronsted-Lowry acid and it can react with ammonia a Bronsted-Lowry base to produce as mentioned ions in the following reaction.
[Al(H2O)63+] + NH3 → [Al(H2O)52+ OH]+ NH4+acid base base acid
The conjugate acid-base pairs are ([Al(H2O)6]3+, [Al(H2O)5OH]2+ ) and (NH4+,NH3)
(b)
Interpretation:
A chemical equation for the given information has to be written and the conjugate acid, base has to be identified.
Concept introduction:
Acid:
According to Bronsted-Lowry theory, a species which donates a proton in a proton transfer-reaction is said to be an acid.
Base:
According to Bronsted-Lowry theory, a species which accepts a proton in a proton transfer-reaction is said to be base.
Conjugated acid:
In the conjugate acid-base pair, a species which can donates a proton is said to be conjugated acid.
Conjugated base:
In the conjugate acid-base pair, a species which can accepts a proton is said to be conjugated base.
(b)

Answer to Problem 15.109QP
The chemical equation and its conjugate acid, base is
CH3CH2SH + H2SO4 → CH3CH2SH2+ + HSO4- base acid acid base
The conjugate acid-base pairs are (CH3CH2SH2+, CH3CH2SH) and (H2SO4,HSO4-)
Explanation of Solution
Ethanethiol acts as Bronsted-Lowry base and it can react with sulfuric acid a Bronsted-Lowry acid to produce as mentioned ions in the following reaction.
CH3CH2SH + H2SO4 → CH3CH2SH2+ + HSO4- base acid acid base
The conjugate acid-base pairs are (CH3CH2SH2+, CH3CH2SH) and (H2SO4,HSO4-)
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Chapter 15 Solutions
Student Solutions Manual for Ebbing/Gammon's General Chemistry, 11th
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