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NEETChemistryHaloalkanes and Haloarenes

How are good yields of alkyl iodides (R—I) obtained?

Options

  1. ABy heating alcohols with sodium or potassium iodide in orthophosphoric acid.
  2. BBy shaking alcohols with concentrated HCl at room temperature.
  3. CBy using phosphorus tribromide and triiodide as reagents.
  4. DBy reacting alcohols with bromine and iodine at low temperatures.

Correct answer

A. By heating alcohols with sodium or potassium iodide in orthophosphoric acid.

Step-by-step solution

Good yields of R—I may be obtained by heating alcohols with sodium or potassium iodide in 95% orthophosphoric acid.

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