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AP EAMCET202422 May 2024Evening ShiftChemistryp Block Elements (Group 13 & 14)Actual

In which of the following reactions, hydrogen is one of the products? i. NaBH ₄+ I ₂ ii. BF ₃+ NaH 450 ~K iii. BF ₃+ LiAlH ₄ iv. B ₂ H ₆+ NH ₃ heat

Options

  1. Aii, iii
  2. Bi, ii
  3. Ci, iv
  4. Diii, iv

Correct answer

C. i, iv

Step-by-step solution

(i) 2 NaBH ₄+ I ₂ ~B ₂ H ₆+2 NaI + H ₂ (ii) 2 BF ₃+6 NaH 450 ~K ~B ₂ H ₆+6 NaF (iii) 4 BF ₃+3 LiAlH ₄ 2 ~B ₂ H ₆+3 LiF +3 AlF ₃ So in reaction (i) and (iv) hydrogen is one of the product.

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