Question

Select correct statement(s)-

• A. Borax is used as a buffer
• B. 1 M borax solution reacts with equal volumes of 2 M HCl solution
• C. Titration of borax can be made using methyl orange as the indicator
• D. Coloured bead obtained in borax-bead test contains metaborate.

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A Borax is used as a buffer
B 1 M borax solution reacts with equal volumes of 2 M HCl solution
C Titration of borax can be made using methyl orange as the indicator
D Coloured bead obtained in borax-bead test contains metaborate.

As it can be seen that,
aqueous solution of borax contains equal amount of weak acid and its salt so it can acts as buffer solution.
Also,
Aqueous solution of borax reacts with 2 mol of acids. This is because aq. solution of borax is alkaline in nature and gives two mole of base.