NCERT Class XI Chemistry The p-Block Elements Solutions

Question : 33 of 38

Marks: +1, -0

An aqueous solution of borax is

Solution:

(c) : Borax dissolves in water to give an alkaline solution. Thus it is of basic nature due to hydrolysis and turns red litmus blue.

\mathrm{Na}_2\mathrm{B}_4\mathrm{O}_7+7\mathrm{H}_2\mathrm{O}

→

\underset{\text{weak acid}}{4\mathrm{H}_3\mathrm{BO}_3}+\underset{\text{strong base}}{2\mathrm{NaOH}}

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