For the following carboxylic acids, (i) $\mathrm{F}_3 \mathrm{CCOOH}$ (ii) $\mathrm{CH}_3 \mathrm{COOH}$…

For the following carboxylic acids, (i) $\mathrm{F}_3 \mathrm{CCOOH}$ (ii) $\mathrm{CH}_3 \mathrm{COOH}$ (iii) $\mathrm{C}_6 \mathrm{H}_5 \mathrm{COOH}$ (iv) $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{COOH}$ The correct order of $\mathrm{p} K_a$ values is
  1. i $>$ iii $>$ ii $>$ iv
  2. iv $>$ ii $>$ iii $>$ i
  3. iv $>$ iii $>$ ii $>$ i
  4. i $>$ ii $>$ iv $>$ iii

Solution

The order of acidity is :
So, the order of $\mathrm{p} K_a$ values is (iv) $>$ (ii) $>$ (iii) $>$ (i)

Asked in: NEET 2022 (Phase 1)

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