Q1 · CSIR NET Chemistry, June 2017
Paper: CSIR NET June 2017 · Subject: Inorganic Chemistry · Chapter: Acid and Bases · Topic: Acid and Bases – General · Marks: 2 · Difficulty: Easy
The compound that gives a basic solution in HF is :
(a)$\mathrm{AsF}_{5}$
(b)$\mathrm{PF}_{5}$
(c)$\mathrm{BF}_{3}$
(d)$\mathrm{BrF}_{3}$
Answer
Answer (as printed): D
Explanation
AsF5 + 2HF → [AsF6]- + [H2F]+ PF5 + 2HF →[PF6]- + [H2F]+ BF3 + 2HF → [BF4]- +[H2F]+ BrF3+ HF →[BrF2]+ + [HF2]- BrF3 acts as base as it donate F- in HF
Explanation as extracted from the printed page; notation may be imperfect.
Study loop for Acid and Bases