Question

Aqueous solution of which of the following boron compounds will be strongly basic in nature?

पर्याय

• NaBH₄

• LiBH₄

• B₂H₆

• Na₂B₄O₇ 

Answer 1

Na₂B₄O₇ 

Explanation:

Na₂B₄O₇ gives H₃BO₃ and NaOH in water. 

Reaction: \[\ce{Na2B4O7 + 7H2O -> \underset{Weak acid}{4H3BO3} + \underset{Strong base}{2NaOH}}\]

An aqueous solution of borax Na₂B₄O₇ is basic in nature as it on hydrolysis produces H₃BO₃ (a weak acid) and NaOH (a strong base).