What is the correct order of acidity of the protons marked A–D in the given compounds? [2023]

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Solution

Q.
What is the correct order of acidity of the protons marked A–D in the given compounds [2023]

1 $H_{C} > H_{D} > H_{A} > H_{B}$

2 $H_{C} > H_{D} > H_{B} > H_{A}$

3 $H_{C} > H_{A} > H_{D} > H_{B}$

4 $H_{D} > H_{C} > H_{B} > H_{A}$

Ans.
(1)

$(- COOH)$ carboxylic acid is more acidic than alcohol or terminal alkyne. $K_{a} = H_{C} > H_{D} > H_{A} > H_{B}$

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