Q2 · CSIR NET Chemistry, December 2019
Paper: CSIR NET December 2019 · Subject: Inorganic Chemistry · Chapter: Acids and Bases · Topic: Acid and Bases – General · Marks: 2 · Difficulty: Medium
Among $\mathrm{SO}_{2}(\mathrm{OH})\mathrm{F}$, $\mathrm{CH}_{3}\mathrm{CO}_{2}\mathrm{H}$, $\mathrm{LiF}$ and $\mathrm{H}_{2}\mathrm{O}$, the compound(s) which behave(s) as a base in liquid $\mathrm{HF}$ is/are
(a)$\mathrm{CH}_{3}\mathrm{CO}_{2}\mathrm{H}$ and $\mathrm{LiF}$ only
(b)$\mathrm{LiF}$ only
(c)$\mathrm{SO}_{2}(\mathrm{OH})\mathrm{F}$ and $\mathrm{LiF}$ only
(d)$\mathrm{CH}_{3}\mathrm{CO}_{2}\mathrm{H}$, $\mathrm{LiF}$ and $\mathrm{H}_{2}\mathrm{O}$
Answer
SELF-PRACTICE — the source book printed no answer.
Nothing is invented here, so this question has no answer on record.
Explanation
HOSO2F + HF → [H2F]+ + [SO3F]- Acid CH3CO2H+2HF → [CH3C(OH)2]+ + [HF2]- Base LiF + HF → Li+ [HF2]- (Base) H2O + HF → H3O+ + F- (base)
Explanation as extracted from the printed page; notation may be imperfect.
Study loop for Acids and Bases