Single Choice

The compound that will react with $$HBr$$ most readily is:

A$$\displaystyle \left ( CH_{3} \right )_{3}COH$$
Correct Answer
B$$\displaystyle \left ( CH_{3} \right )_{2}CHOH$$
C$$\displaystyle CH_{3}CH_{2}OH$$
D$$\displaystyle C_{6}H_{5}OH$$

Solution

Reactivity order of alcohols with HBr is 3∘>2∘>1∘ alcohol.
The option (A) is a 3∘ alcohol and hence it will react most readikly with HBr.
Phenol (option D) does not react with HBr. (Ar-O) bond is not broken unless the ring is activated by the presence of electron withdrawing group (e.g., NO2) at o- and p-positions.

SIMILAR QUESTIONS

Alcohols, Phenols and Ethers

$$HBr$$ reacts fastest with:

Alcohols, Phenols and Ethers

Distinction between primary, secondary and tertiary alcohol is done by

Alcohols, Phenols and Ethers

The compound ‘A’ when treated with ceric ammonium nitrate solution gives yellow ppt. The compound ‘A’ is

Alcohols, Phenols and Ethers

In reaction of alcohols with alkali metal, acid etc. Which of the following alcohol will react fastest?

Alcohols, Phenols and Ethers

The starting substance for the preparation of $$CH_3I$$ is

Alcohols, Phenols and Ethers

Which of the following is responsible for iodoform reaction

Alcohols, Phenols and Ethers

t-butyl alcohol reacts less rapidly with metallic sodium than the primary alcohol. Explain why?

Alcohols, Phenols and Ethers

The group reagent for the test of alcohol is:

Alcohols, Phenols and Ethers

State whether the following statement is True or False. Methyl alcohol gives iodoform test.

Alcohols, Phenols and Ethers

State whether the following statement is True or False. $$FeSO_4+H_2O_2$$ is called Fenton's reagent.

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