Paper: CSIR-NET December 2018 · Subject: Inorganic Chemistry · Chapter: Acids and Bases · Topic: Acids & Bases – General · Marks: 2 · Difficulty: Medium
Consider compounds $\mathrm{PF}_{5}, \mathrm{SbF}_{5}, \mathrm{PH}_{3}$ and $\mathrm{SbH}_{3}$. The strongest acid and the strongest base among these are, respectively
(a)$\mathrm{PF}_{5}$ and $\mathrm{PH}_{3}$
(b)$\mathrm{SbF}_{5}$ and $\mathrm{PH}_{3}$
(c)$\mathrm{SbF}_{5}$ and $\mathrm{SbH}_{3}$
(d)$\mathrm{PF}_{5}$ and $\mathrm{SbH}_{3}$
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
SbF₅ is the strongest acid, PH₃ the strongest base (b).