Chemistry - Complete Pblock- Question with Solution | TestHub

${\mathrm{H}}_3\mathrm{B}{\mathrm{O}}_3$acts as a weak monobasic Lewis acid
$\mathrm{B}(\mathrm{O}\mathrm{H}{)}_3+\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}\to \mathrm{N}\mathrm{a}[\mathrm{B}\left(\mathrm{O}\mathrm{H}{)}_4\right]$
On addition of cis 1, 2 diol in${\mathrm{H}}_3\mathrm{B}{\mathrm{O}}_3$solution, acidic strength of${\mathrm{H}}_3\mathrm{B}{\mathrm{O}}_3$increases due to chelation effect.