Arrange in the order of decreasing \( K_{a} \). (P) \( \mathrm{F}-\mathrm{CH}_{2} \mathrm{CH}_{2...

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Arrange in the order of decreasing \( K_{a} \).
(P) \( \mathrm{F}-\mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{COOH} \)
(Q) img src=https://penpencil-static-content.s3.ap-south-1.amazonaws.com/5eb393ee95fab7468a79d189/qxb5jwiduptwkour6atf2bbyq.png width=173 height=56 /
(R) \( \mathrm{F}-\mathrm{CH}_{2}-\mathrm{COOH} \)
(S) \( \mathrm{Br}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{COOH} \)
Correct answer is:
(1) \( \mathrm{Q}>\mathrm{S}>\mathrm{P}>\mathrm{R} \)
(2) P \( > \) R \( > \) S \( > \) Q
(3) R \( > \) Q \( > \) P \( > \) S
(4) S \( > \) Q \( > \) P \( > \) R
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