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BITSAT 2021

Exam: BITSAT
Year: 2021
Subject: Chemistry
Chapter: p Block Elements (Group 13 & 14)

BITSAT 2021 · Chemistry · p Block Elements (Group 13 & 14)

Diborane (B_ 2 H_ 6 ) reacts independently with O_ 2 and H_ 2 O to...

Diborane

\left(\mathrm{B}_{2} \mathrm{H}_{6}\right)

reacts independently with

\mathrm{O}_{2} and \mathrm{H}_{2} \mathrm{O}

to produce, respectively:

Options

A $\mathrm{B}_{2} \mathrm{O}_{3}$ and $\mathrm{H}_{3} \mathrm{BO}_{3}$
B $\mathrm{B}_{2} \mathrm{O}_{3}$ and $\left[\mathrm{BH}_{4}\right]^{-}$
C $\mathrm{H}_{3} \mathrm{BO}_{3}$ and $\mathrm{B}_{2} \mathrm{O}_{3}$
D $\mathrm{HBO}_{2}$ and $\mathrm{H}_{3} \mathrm{BO}_{3}$

Correct answer

A. $\mathrm{B}_{2} \mathrm{O}_{3}$ and $\mathrm{H}_{3} \mathrm{BO}_{3}$

Step-by-step solution

\mathrm{B}_{2} \mathrm{H}_{6}+3 \mathrm{O}_{2} \rightarrow \mathrm{B}_{2} \mathrm{O}_{3}+3 \mathrm{H}_{2} \mathrm{O}\mathrm{B}_{2} \mathrm{H}_{6}+6 \mathrm{H}_{2} \mathrm{O} \rightarrow 2 \mathrm{H}_{3} \mathrm{BO}_{3}+6 \mathrm{H}_{2}

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