What is the correct order of acidity of the protons marked A–D in the given compounds? HB CO2HC HD HA (A) HC HD HA HB (B) HC HD HB HA (C) HC HA HD HB (D) HD HC HB HA

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Question

What is the correct order of acidity of the protons marked A–D in the given compounds? HB CO2HC HD HA

(A) HC > HD > HA > HB
(B) HC > HD > HB > HA
(C) HC > HA > HD > HB
(D) HD > HC > HB > HA

Prashant Kotian · Accepted Answer

Correct answer: A. (–COOH) carboxylic acid is more acidic than alcohol or terminal alkyne. Ka = HC > HD > HA > HB.

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