Which of the following is laboratory method for the preparation of B2H6 ?
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a
4BF3+3LiAlH4⟶ Diethyl ether 2 B2H6+3LiF+3AlF3
b
2NaBH4+I2⟶ Polyether B2H6+2Nal+H2
c
2BF3+6NaH⟶450 KB2H6+6NaF
d
All of the above
answer is B.
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Detailed Solution
Laboratory method of preparation: Diborane is prepared in the laboratory by the oxidation of sodium borohydride with iodine in polyether as solvent.2NaBH4+I2→PolyetherB2H6+2NaI+H2