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NEETChemistryd and f Block Elements

Which of the following pairs of catalysts is used for the polymerisation of ethylene and the oxidation of ethyne to ethanal, respectively?

Options

  1. ATiCl₄ + Al(CH₃)₃ and PdCl₂
  2. BPdCl₂ and TiCl₄ + Al(CH₃)₃
  3. CNickel complexes and PdCl₂
  4. DTiCl₄ + Al(CH₃)₃ and V₂O₅

Correct answer

A. TiCl₄ + Al(CH₃)₃ and PdCl₂

Step-by-step solution

The polymerisation of ethylene to manufacture polyethylene is catalysed by the Ziegler-Natta catalyst, which is a mixture of titanium tetrachloride ( TiCl₄ ) and trimethylaluminium ( Al(CH₃)₃ ). The oxidation of ethyne to ethanal is catalysed by palladium(II) chloride ( PdCl₂ ). Therefore, the correct respective pair of catalysts is TiCl₄ + Al(CH₃)₃ and PdCl₂ . Answer: TiCl₄ + Al(CH₃)₃ and PdCl₂

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