The correct statement (s) for orthoboric acid is/are

Options

A. It behaves as a weak acid in water due to self ionization.
B. Acidity of its aqueous solution increases upon addition of ethylene glycol.
C. It has a three dimensional structure due to hydrogen bonding.
D. It is weak electrolyte in water.

Answer

B, D

Explanation

`H_(3)BO_(3)` does not undergo self ionization.
On adding cis-diols, them form complexing species with orthoboric acid.
Hence the acidity increase on adding ethylene glycol.
`H_(3)BO_(3)+H_(2)OtoB(OH)_(4)^(-)+H^(+)`

It arranges into planar sheets due to `H`-bonding.
Hence, it has `2`-dimensional structure due to `H` bonding.
It acts as a weak acid in water, so it is a weak electrolyte in water