Q21 · CSIR-NET Chemistry, June 2016
Paper: CSIR-NET June 2016 · Subject: Inorganic Chemistry · Chapter: Acids and Bases · Topic: Acids & Bases – General · Marks: 2 · Difficulty: Medium
Among KF, $\mathrm{SnF}$, and $\mathrm{SbF}_{4}$, solute(s) that increase(s) the concentration of $\mathrm{BrF}_{3}^{-}$ in $\mathrm{BrF}_{3}$, is/are
(a)KF only
(b)KF and $\mathrm{SnF}_{4}$
(c)$\mathrm{SnF}_{4}$ and $\mathrm{SbF}_{5}$
(d)$\mathrm{KF}, \mathrm{SnF}_{4}$ and $\mathrm{SbF}_{5}$
Answer
Answer: A ✓ checked by 4AB · confidence medium
The source book printed D; on checking, A is correct — see the explanation.
Explanation
KF donates F⁻ and raises [BrF₄⁻]; SnF₄ and SbF₅ accept F⁻ and raise [BrF₂⁺] — KF only (a).
Study loop for Acids and Bases
· Browse this chapter in the app