VKC ScienceChemistry for written exams Telegram

UPSC Combined Geo-Scientist

Chemist

  • 3 descriptive papers
  • 200 marks each
  • 3 h per paper

Mains Paper I covers inorganic chemistry.

UPSC Combined Geo-Scientist, Mains · 2019 · Mains Paper I

Q11(b). Amine oxide and phosphine oxide reactivity

Question

Consider trimethylamine oxide and trimethylphosphine oxide. Which of them is more reactive? Justify your answer.

Answer in brief

Trimethylamine oxide is generally more reactive towards oxygen transfer or bond cleavage; trimethylphosphine oxide is stabilised by its very strong P–O bond.

Part of VKC Basic

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The full model answer

As written for the answer booklet: the diagram carries the working, the lines stay short. Read here only; it is not offered as a download.

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CoversAmine oxidephosphine oxide reactivityBonding in group 15

All parts of Question 11