Give the increasing order of their acidic strength of the following $C H_{3} C O O H, H_{2} O$ and $C_{2} H_{5} O H$ .

C_{2} H_{5} O H > C H_{3} C O O H > H_{2} O

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C H_{3} C O O H > C_{2} H_{5} O H > H_{2} O

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C H_{3} C O O H > H_{2} O > C_{2} H_{5} O H

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H_{2} O > C_{2} H_{5} O H > C H_{3} C O O H

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Solution

The correct option is D $C H_{3} C O O H > H_{2} O > C_{2} H_{5} O H$
(i) Due to presence of carbonyl group and resonance the anion(i.e., carboxylate ion) is more stable than water and alcohol.
Hence, is most acidic.

(ii) The value of $K_{a}$ for $H_{2} O$ is more than of $C_{2} H_{5} O H$ .
Hence, water is more acidic than alcohol.

Option C is correct.

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Give the increasing order of their acidic strength of the following CH3COOH,H2O and C2H5OH.

Give the increasing order of their acidic strength of the following $C H_{3} C O O H, H_{2} O$ and $C_{2} H_{5} O H$ .