Choose the false statement from the following. - Chemistry

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MCQ

Choose the false statement from the following.

Options

  • Constant boiling HBr (48%) is used for the preparation of alkyl bromides from alcohols.

  • Tertiary alcohol readily reacts with cone. HCI in the absence of zinc chloride.

  • Good yield of alkyl halide may be obtained by heating alcohols with Nal in 95% H3PO4.

  • The order of reactivity of alcohols with a given halo acid 1° > 2° > 3°.

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Solution

The order of reactivity of alcohols with a given halo acid 1° > 2° > 3°.

Explanation:

Alcohol reacts differently depending on its kind. The rate of production from alkyl halide will be faster the more stable the carbocation that alcohol forms. Alcohols react to haloacids in the following order: 3° > 2° > 1°.

Concept: Methods of Preparation of Alkyl Halides
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