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Question

Arrange in increasing order of acidity: CH₃CH₂CH₂COOH, CH₃CHClCOOH, CH₃COOH.

Options

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Explanation

Acidity increases with electron-withdrawing groups: CH₃CH₂CH₂COOH (alkyl) < CH₃COOH < CH₃CHClCOOH (Cl closer to COOH).