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AP EAMCET202017 Sep 2020Evening ShiftChemistryp Block Elements (Group 13 & 14)Actual

A compound (X ), of boron reacts with ( NH ₃ ) on heating to give another compound (Y ), which is called inorganic benzene. The compound (X ) can be prepared by treating ( BF ₃ ) with lithium aluminium hydride. The compounds (X ) and (Y ) are represented by the formulas.

Options

  1. A( B ₂ H ₆, ~B ₃ ~N ₃ H ₆ )
  2. B( B ₂ O ₃, ~B ₃ ~N ₃ H ₆ )
  3. C( BF ₃, ~B ₃ ~N ₃ H ₆ )
  4. D( B ₃ ~N ₃ H ₆, ~B ₂ H ₆ )

Correct answer

A. ( B ₂ H ₆, ~B ₃ ~N ₃ H ₆ )

Step-by-step solution

( BF ₃ [- LiF ,- AlF ₃] LiAlH ₄ (X) B ₂ H ₆ [- H ₂] NH ₃ / (Y) B ₃ ~N ₃ H ₆ ) ((X) B ₂ H ₆ ) (Diborane) ((Y) B ₃ ~N ₃ H ₆ ) (Borazine or inorganic benzene)

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