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Binary Compounds - Hydrides

Arrange the f...

Question

Arrange the following acids in decreasing order of $[H^{+}]$ conc.

A

I > I I > I I I

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B

I I > I I I > I

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C

I I > I > I I I

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D

I I I > I I > I

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Solution

The correct option is A $I > I I > I I I$
Reactions involving cleavage of $O - H$ bonds
Taking example of phenol and its reactions.
Ref. image
in I & II both compounds nave $C^{⊖}$ withdrawing groups athachal to $- C O O H$ but in $3^{r d}$ its E.DG
$∴$ order of acidic strength is
$I > I I > I I I$

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