
Concept explainers
(a)
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.
(a)

Explanation of Solution
Since formic acid is a Bronsted-Lowry acid, it donates proton when it reacts with cyanide ion. The
(b)
Interpretation:
The conjugate acid-base pairs for the reversible reaction of methyl
Concept Introduction:
Refer to part (a).
(b)

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
(c)
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)

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
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Chapter 8 Solutions
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