The least acidic compound, among the following is | JEE Main 2025 Chemistry PYQ | Jeeify

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MCQEasyJEE Main 2025 · 3 April, Shift 1Phenols

The least acidic compound, among the following is

Four labelled compounds. (A) 3-ethoxyphenol, an aromatic ring bearing an OEt group and an OH group in a meta relationship. (B) benzenesulfonic acid, a benzene ring bearing SO3H. (C) butanoic acid, an open chain ending in COOH. (D) ethyl propiolate, EtO2C-C(triple bond)C-H, an ester carrying a terminal alkyne hydrogen.

A
D — $\text{EtO}_2\text{C}-\text{C}\equiv\text{C}-\text{H}$ , a terminal alkyne bearing an ester group
B
A — $3$ -ethoxyphenol
C
B — benzenesulfonic acid, $\text{C}_6\text{H}_5\text{SO}_3\text{H}$
D
C — butanoic acid, $\text{CH}_3\text{CH}_2\text{CH}_2\text{COOH}$

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