A few grams of borax is dissolved in distille | vedclass

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Question

(D) Borax $(Na_2B_4O_7 \cdot 10H_2O)$ dissolves in water to form an alkaline solution due to hydrolysis.The reaction is as follows:$Na_2B_4O_7 + 7H_2O

Vedclass · Accepted Answer

$7 - 14$

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(D) Borax $(Na_2B_4O_7 \cdot 10H_2O)$ dissolves in water to form an alkaline solution due to hydrolysis.The reaction is as follows:$Na_2B_4O_7 + 7H_2O \rightarrow 2NaOH + 4H_3BO_3$Here,$NaOH$ is a strong base and $H_3BO_3$ (orthoboric acid) is a very weak acid.Since the solution contains a strong base,the resultant solution is basic in nature.Therefore,the $pH$ of the solution is greater than $7$,which falls in the range of $7 - 14$.

$A$ few grams of borax is dissolved in distilled water. The $pH$ range of the resultant solution is

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