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AP EAMCET201822 Apr 2018Morning ShiftChemistryp Block Elements (Group 13 & 14)Actual

BF ₃ reacts with NaH at 450 ~K to form NaF and X . When X reacts with LiH in diethyl ether, Y is formed. What is Y ?

Options

  1. ALiBO ₂
  2. BLi ₂ ~B ₄ O ₇
  3. CLiBH ₄
  4. DB ₂ H ₆ LiH

Correct answer

C. LiBH ₄

Step-by-step solution

2 BF ₃+6 NaH 450 ~K 6 NaF + B ₂ H ₆(X) B ₂ H ₆+2 LiH Diethyl ether 2 LiBH ₄(Y) Diborane Lithium boron hydride

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