Question

Which is not true about borax?

• A. It is a useful primary standard for titrating against acids.
• B. One mole of borax contains 4 $B-O-B$ bonds.
• C. An aqueous solution of borax can be used as a buffer.
• D. It is made up of two triangular $B{O}_3$ units and two tetrahedral $B{O}_4$ units

Answer 1

The correct option is B One mole of borax contains 4 $B-O-B$ bonds.

Borax is a useful primary standard for titrating against acids. An aqueous solution of borax can be used as a buffer. It is made up of two triangular $B{O}_3$ units and two tetrahedral $B{O}_4$ units. One mole of borax contains 5 $B-O-B$ bonds.