Q35 · CSIR-NET Chemistry, June 2016

Paper: CSIR-NET June 2016 · Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Stability Chelate Effect · Marks: 2 · Difficulty: Easy

Chelate effect is
(a)predominantly due to enthalpy change
(b)predominantly due to entropy change
(c)independent of ring size
(d)due to equal contribution of entropy and enthalpy change
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
Replacing several monodentate ligands by one chelate releases more particles into solution; the chelate effect is predominantly an entropy effect.

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