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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: Boric acid is a weak acid.

Reason R: Boric acid is not able to release \mathrm{\mathrm{H}^{+} \text\; {ion }} on its own. It receives \mathrm{\mathrm{OH}^{+} \text\; {ion }} from water and releases \mathrm{\mathrm{H}^{+} \text \; {ion. }}

In the light of the above statements, choose the most appropriate answer from the options given below.

Option: 1

Both A and R are correct and R is the correct explanation of A.


Option: 2

Both A and R are correct but R is NOT the correct explanation of A.


Option: 3

A is correct but R is not correct.


Option: 4

A is not correct but R is correct.


Answers (1)

best_answer

Boric acid is a weak monobasic acid. It is not a protonic acid but acts as a lewis acid by accepting electrons from a hydroxy ion.

\begin{aligned} &\mathrm{B(OH)_3+240\; H \rightarrow\left[B(OH)_4\right)]^{-}+H_3 O^{+}} \end{aligned}

So, Both A and R are correct and R is the correct explanation of A.

Hence, Option (1) is correct.

Posted by

Irshad Anwar

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