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JEE Main202227 Jun 2022Morning ShiftChemistrys Block ElementsActual

BeCl 2 reacts with LiAlH 4 to give

Options

  1. ABe + Li AlCl 4 + H 2
  2. BBe + AlH 3 + LiCl + HCl
  3. CBeH 2 + LiCl + AlCl 3
  4. DBeH 2 + Li AlCl 4

Correct answer

C. BeH 2 + LiCl + AlCl 3

Step-by-step solution

All the elements except beryllium combine with hydrogen upon heating to form their hydrides,   MH 2 . BeH 2 , however, can be prepared by the reaction of BeCl 2 with LiAlH 4 . . 2 BeCl 2 + LiAlH 4 → 2 BeH 2 + LiCl + AlCl 3

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