Start Free Mock LoginAlready registered? Login here

Chemistry - Complete Pblock- Question with Solution | TestHub

ChemistryComplete Pblock-p-Block 13,14Easy2 minPYQ_2016

ChemistryEasysingle choice

Assertion : $H_{3} BO_{3}$ is a weak acid. Reason: Water extracts the proton of $H_{3} BO_{3}$ .

Options:

Answer:

Solution:

$H_{3} BO_{3}$ is a very weak monobasic acid $(K_{a} = 5.6 \times 1 0^{- 10})$ but it does not act as a proton donor. It behaves as a Lewis acid i.e., it accepts a pair of electrons from $OH^{-}$ ion of $H_{2} O$ . $H - OH + B (OH)_{3} ⟶ [B (OH)_{4}]^{-} + H^{+}$

Stream:AIIMSSubject:ChemistryTopic:Complete Pblock-Subtopic:p-Block 13,14

⏱ 2mℹ️ Source: PYQ_2016

Doubts & Discussion

Loading discussions...