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HBr reacts fastest with...

`HBr` reacts fastest with

A

2 - Methylpropan -1- ol

B

2 - Methylpropan - 2 - ol

C

propan - 2- ol

D

propan - 1 - ol.

Text Solution

Verified by Experts

The correct Answer is:
B
Greater the stability of the intermediate carbocation, more reactive is the alcohol. Since 2 - methylpropan -2- ol generates `3^(@)` carbocation, therefore, it react fastest with `HBr`.
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DISHA PUBLICATION-ALCOHOLS, PHENOLS AND ETHERS-Exercise - 1 : Concept Builder (Topicwise)(TOPIC 2 : Preparation and Properties of Alcohols)
  1. Rate of dehydration of alcohols follows the order

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  2. Reagent used to convert allyl alcohol to acrolein is :

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  3. HBr reacts fastest with

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  4. The best method to prepare cyclohexene from cyclohexanol is by using

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  5. Acid catalysed hydration of alkenes except ethene leads to the formati...

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  6. Which of the following reagent will convert glycerol to acrolein ?

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  7. Which of the following alcohols is least soluble in water ?

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  8. Which of the following will not give iodoform test?

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  9. Ethyl alcohol can be prepared from grignard reagent by the reaction of...

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  10. Glycerol is more viscous than ethanol due to :

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  11. Ethanol and dimethyl ether from a pair of functional isomers. The boil...

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  12. When glycerol is treated with excess of Hl, the product formed is……………...

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  13. Which of the following compounds can be used as antifreeze in automobi...

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  14. In the following sequence of reaction, the product C is CH(3)-Br ove...

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  15. Number of isomeric alcohols of molecular fomula of C(6)H(14)O which g...

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  16. Which of the following reaction(s) can be used for the preparation of ...

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  17. Which of the following is not the product of the dehydration of ?

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  18. The compound X is

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  19. Which carbocation is more likely to be formed in the dehydration of

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  20. Major product is

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