Which is not true about borax?

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Question

(B) The correct formula for borax is $Na_2[B_4O_5(OH)_4] \cdot 8H_2O$.$1$. Borax is a primary standard used in acid-base titrations.$2$. The structure

Vedclass · Accepted Answer

One mole of borax contains $4 \, B - O - B$ bonds

Vedclass · Answer

(B) The correct formula for borax is $Na_2[B_4O_5(OH)_4] \cdot 8H_2O$.$1$. Borax is a primary standard used in acid-base titrations.$2$. The structure of the $[B_4O_5(OH)_4]^{2-}$ ion consists of two tetrahedral $BO_4$ units and two triangular $BO_3$ units sharing corners. It contains $5 \, B - O - B$ bonds,not $4$.$3$. Aqueous solution of borax acts as a buffer because it is a salt of a strong base $(NaOH)$ and a weak acid $(H_3BO_3)$.Therefore,the statement in option $B$ is incorrect.

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