Question

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 $H^{+}$ ion on its own. It receives $O{H}^{-}$ ion from water and releases $H+$ ion.

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

• A. A is correct but R is not correct
• B. Both A and R are correct but R is NOT the correct explanation of A
• C. A is not correct but R is correct
• D. Both A and R are correct and R is the correct explanation of A

Answer 1

The correct option is D Both A and R are correct and R is the correct explanation of A

Boric acid is a weak acid
$H_{3}B{O}_3+H_{2}O\rightleftharpoons \left[B\right(OH{)}_4{]}^{⊝}+H^{\oplus }$
Boric acid is not able to release $H^{+}$ ion on its own.
It receives $O{H}^{-}$ ion from water and releases $H^{+}$ ion as shown in the above reaction.
Hence, Both A and R are correct and R is the correct explanation of A.