p-Block elementsHard

Question

Borax is used as a buffer since :

Options

A.its aqueous solution contains equal amount of weak acid and  its salt
B.it is easily available
C.its aqueous solution contains equal amount of strong acid and its salt
D.statement that borax is a buffer, is wrong

Solution

[B4O5(OH)4]2- + 5H2O ⇋ 2B(OH)3 (weak acid) + 2[B(OH4)]- (salt)

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