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NTA Abhyas JEE Main2020Chemistryp Block Elements (Group 13 & 14)Practice

Compound (X) on reduction with L i A l H 4 gives a hydride (Y) containing 21.72% hydrogen along with other products. The compound (Y) reacts with air explosively resulting in boron trioxide. Compounds x and Y are respectively

Options

  1. AB C l 3 , B 2 H 6
  2. BB 2 H 6 , B C l 3
  3. CB F 3 , A l 2 O 6
  4. DB 2 H 6 , B F 3

Correct answer

A. B C l 3 , B 2 H 6

Step-by-step solution

4 B C l 3 X + 3 L i A l H 4 → 2 B 2 H 6 Y + 3 A l C l 3 + 3 L i C l Percentage of hydrogen in B 2 H 6 = 6 27.62 × 100 = 21.72 B 2 H 6 + 3 O 2 → E x p l o s i o n B 2 O 3 + 3 H 2 O

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