Question

Alkyl fluorides are synthesised by heating an alkyl chloride/bromide in presence of ______ or ______.

(i) CaF₂

(ii) CoF₂

(ii) Hg₂F₂

(iv) NaF

Answer 1

Alkyl fluorides are synthesised by heating an alkyl chloride/bromide in presence of CoF₂ or Hg₂F₂.

Explanation:

The synthesis of alkyl fluorides is best accomplished by heating an alkyl chloride/bromide in the presence of a metallic fluoride such as AgF, Hg₂F₂, CoF₂ or SbF₃. The reaction is termed a Swarts reaction.

\[\ce{H3C-Br + AgF -> H3C-F + AgBr}\]