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JEE Main 2025 January 24 Shift 1 Exam Analysis Released - Check Difficulty Level
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Diborane - Practice Questions & MCQ

Edited By admin | Updated on Sep 18, 2023 18:35 AM | #JEE Main

Quick Facts

  • 18 Questions around this concept.

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QuestionEASY

How many isomeric disubstituted borazine B_3N_3H_4X_2 are possible?

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$\ln B_2 H_6$

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Which of the following is electron-deficient ?

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The hybridisation state of Boron atom in diborane is:

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Concepts Covered - 0

Diborane

The simplest boron hydride known is diborane. B2H6 is prepared by the following methods:

  • Laboratory Method: In the laboratory, it is prepared by the reaction of sodium borohydride with iodine in a high boiling polyether solvent(CH3OCH2CH2)2O.
    2 \mathrm{NaBH}_{4}\: +\: \mathrm{I}_{2} \stackrel{\text { Polyether }}{\longrightarrow} \mathrm{B}_{2} \mathrm{H}_{6}\: +\: 2 \mathrm{NaI}\: +\: \mathrm{H}_{2}
  • Industrial Method: 
    2 \mathrm{BF}_{3}\: +\: 6 \mathrm{LiH} \stackrel{450 \mathrm{K}}{\longrightarrow} \mathrm{B}_{2} \mathrm{H}_{6}+\mathrm{LiF}
  • From Boron Halides:
    4 \mathrm{BX}_{3}+3 \mathrm{LiAlH_{4}}\: \rightarrow 2 \mathrm{B}_{2} \mathrm{II}_{6}+3 \mathrm{LiX}+3 \mathrm{AlX}_{3}
  • When boron halides and excess of hydrogen undergo reaction by passing silent electric discharge at low pressure, B2H6 is formed.
     

Study other Related Concepts

Diborane Current Topic

Physical Properties of Boron Family
Anomalous Behaviour of Boron
Diagonal Relationship of B and Si
Chemical Properties of Boron Family
Diborane
Orthoboric Acid
Borax Formula
Group 14 Elements (Carbon Family)
Allotropes of Carbon
Carbon monoxide and carbon dioxide

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