Question

what so u mean by markovnikav's rule?

Answer 1

Hey Mate,

Here Is Your Answer

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In organic chemistry, Markovnikov's rule or Markownikoff's rule describes the outcome of some addition reactions. The rule was formulated by Russian chemist Vladimir Vasilevich Markovnikov in 1865.

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Hope It Helps You.

Answer 2

Hi!

Markovnikov’s Rule: This rule states that an addition reaction of an asymmetric alkene by an asymmetric reagent the negative part of the reagent attacks the carbon containing the less number of hydrogen across the double bond.

The major product will be decided by the most stable carbocation formed and hence follows carbocation stability.

3°>2°>1°

Statement maybe difficult to understand in the beginning but as you carry out more reactions by practicing them on paper it will become easy.

For your better understanding let me give you an example:

Markovnikov’s rule is mostly carried out using HBr as it is a good reagent for this process, neither highly exothermic nor highly endothermic.

Propene reacts with HBr:

CH3−CH=CH2+HBr−−>CH3−CH(Br)−CH3+CH3−CH2−CH2(Br)

We obtain two products 2-Bromopropane and 1-Bromopropane.

according to Markovnikov’s rule the major product the major product will be decide by carbocation stability, we see that between 2-Bromopropane and 1-Bromopropane if we remove the bromine atom, 2-Bromopropane will have a 2° carbocation and 1-Bromopropane will have 1° carbocation. Hence the major product will be 2-Bromopropane.

I hope that answers your question.