1. Tardigrade
  2. Question
  3. Chemistry
  4. The reaction B(OH)3 + NaOH leftharpoons Na[B(OH)4] B(OH)3 + NaOH leftharpoons NaBO2 + 2 H2O can be made to proceed to forward direction by the addition of

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The reaction
$B(OH)_3 + NaOH \rightleftharpoons Na[B(OH)_4]$
$ B(OH)_3 + NaOH \rightleftharpoons NaBO_2 + 2 \, H_2O$
can be made to proceed to forward direction by the addition of

IIT JEEIIT JEE 2006The p-Block Elements

Solution:

$B(OH)_3$ behaves as a weak monobasic acid.
However, when cis-diol is added to the titration solution, it forms a very stable complex with $[B(OH)_4]^-$ formed by the forward reaction, thus effectively removing it from solution. This upsets the balance of the equation and the reaction proceeds completely to the right. Thus all the $B(OH)_3$ reacts with $NaOH$ and it acts as a strong acid in the presence of the cis-diol

Solution Image