p-Block elementsHard

Question

Borax is used as cleasing agent because on dissolving in water it gives

Options

A.Alkaline solution
B.Acidic solution
C.Bleaching solution
D.Colloidal solution

Solution

Borax is Na2B4O710H2O. It gives alkaline solution on dissolution in water as it is a salt of strong base and weak acid.
Na2B4O7 + 7H2O → 4H3BO3 + 2NaOH

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