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Karnataka Board PUCPUC Science 2nd PUC Class 12

Why on dilution the m Λm of CHA3COOH increases very fast, while that of CHA3COONa increases gradually?

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Question

Why on dilution the m Λm of \[\ce{CH3COOH}\] increases very fast, while that of \[\ce{CH3COONa}\] increases gradually?

Short/Brief Note
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Solution

In the case of \[\ce{CH3COOH}\], which is a weak electrolyte, the number of ions increase on dilution due to an increase in degree of dissociation.

\[\ce{CH3COOH + H2O ⇌ CH3COO^{-} (aq) + H3O^{+}}\]

In the case of strong electrolyte such as \[\ce{CH3COONa}\], the number of ions remains the same but the interionic attraction decreases.

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Chapter 3: Electrochemistry - Exercises [Page 40]

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NCERT Exemplar Chemistry Exemplar [English] Class 12
Chapter 3 Electrochemistry
Exercises | Q III. 49. | Page 40

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