As per Hard soft acid base principle which of the following…

Chemistry Ionic Equilibrium Acids and Bases Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

As per Hard soft acid base principle which of the following reactions are possible ?

LiI + CsF ⎯→ LiF + CsI

R 2 S. BF 3 + R 2 O ⎯→ R 2 O. BF 3 + R 2 S

R 2 O. BH 3 + R 2 S ⎯→ R 2 S. BH 3 + R 2 O

HgF 2 + BeI 2 ⎯→ BeF 2 + HgI 2

Text Solution

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The correct answer is:

CHECK THE SOLUTION.

(a, b, c, d)

LiI + CsF ⎯→ LiF + CsI

Hard-soft soft-hard hard-hard soft soft

R 2 S. BF 3 is lesser stable than R 2 O . BF 3

soft base hard base hard acid hard acid

HgF 2 + BeI 2 ⎯→ BeF 2 + HgI 2

Soft-hard hard-soft hard-hard soft-soft

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