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

The correct statement(s) for orthoboric acid is/are
  1. It behaves as a weak acid in water due to self ionization.
  2. Acidity of its aqueous solution increases upon addition of ethylene glycol.
  3. It has a three dimensional structure due to hydrogen bonding.
  4. It is a weak electrolyte in water.

Solution

A] H3BO3 is a weak monobasic Lewis acid.
H3BO3+H-OH⇌BOH4-+H+…..(i)
B] Equilibrium (i) is shifted in forward direction by the addition of syn-diols like ethylene glycol which forms a stable complex with BOH4- .


C] It has a planar sheet like structure due to hydrogen bonding.
D] H3BO3 is a weak electrolyte in water.

Asked in: JEE Advanced 2014 (Paper 1)

Practice more p Block Elements (Group 13 & 14) questions on Aicharya