Question

Electrophilic addition on a carbon-carbon double bond involves the intermediate formation of a more stable carbocation. This statement is called
A) Saytzeff's rule
B) Baeyer's effect
C) Markovnikov's rule
D) None of these

Answer 1

Hint: The electrophilic addition of hydrogen halide to alkene follows two rules, one is Markownikoff’s and another one is anti markovnikov's rule. These rules decide the addition of halogen and hydrogen atoms in the double bonded carbon atom.

Complete Step by Step Answer:
In electrophilic addition reaction hydrogen halide gets attached to the alkene. In this reaction in the first step the alkene gets protonated to give the stable carbocation. In the next step, a nucleophile that is a halide atom attacks the carbocation to form the desired alkyl halide.

According to the markownikoff’s rule of electrophilic addition in carbon-carbon double bond the carbocation which contains the more substituent is the most stable one and halide attacks that carbon atom of alkene. Thus we can write that electrophilic addition on a carbon-carbon double bond involves the intermediate formation of a more stable carbocation. This statement is called Markovnikov's rule.
Thus the correct option is C.

Note: In electrophilic addition reaction when the alkene is treated with alkyl halide in presence of peroxide then the least stable carbocation forms the major product. This rule is called anti markovnikov's rule. This reaction proceeds through a free radical mechanism.