. Aqueous solution of borax is

A: neutral

B: amphoteric

C: basic

D: acidic


Best Answer


Borax (Na[ B4O5(OH)4].8H2O) is a salt of boric acid (H3BO3) and sodium hydroxide (NaHO) base.

Borax, also called sodium borate, sodium tetraborate or disodium tetraborate is basically a salt of weak acid and a strong base.

Borax, when dissolved in water, ionizes and hydrolysis of borate ion formed gives HO- and boric acid.

Since boric acid is weak acid and sodium hydroxide is strong, the aqueous solution is alkaline in nature.

Final Answer:

The correct answer is C: basic


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