(C) $H_3BO_3$ (orthoboric acid) is a weak Lewis acid.It reacts with water as follows:$H_3BO_3 + H_2O \rightleftharpoons [B(OH)_4]^- + H^+$It does not

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$Statement-1$ is True,$Statement-2$ is False.

(C) $H_3BO_3$ (orthoboric acid) is a weak Lewis acid.It reacts with water as follows:$H_3BO_3 + H_2O \rightleftharpoons [B(OH)_4]^- + H^+$It does not act as a proton donor (Brønsted-Lowry acid); instead,it accepts an $OH^-$ ion from water molecules to release a proton.Therefore,$Statement-1$ is True,but $Statement-2$ is False.Hence,the correct option is $(C)$.

Class 11 Chemistry p-Block Elements (Class 11)Boron family

$STATEMENT-1$: In water,orthoboric acid behaves as a weak monobasic acid. because
$STATEMENT-2$: In water,orthoboric acid acts as a proton donor.

IIT 2007 All IIT

A
$Statement-1$ is True,$Statement-2$ is True; $Statement-2$ is a correct explanation for $Statement-1$.
B
$Statement-1$ is True,$Statement-2$ is True; $Statement-2$ is $NOT$ a correct explanation for $Statement-1$.
C
$Statement-1$ is True,$Statement-2$ is False.
D
$Statement-1$ is False,$Statement-2$ is True.