Question

Explain peroxide effect ? ​

Answer 1

Peroxide effect: The change in regioselectivity of the addition of HBr to an alkene or alkyne in the presence of a peroxide. ... In the absence of a peroxide, HBr adds to propene via an ionic mechanism (with a carbocation intermediate) to give 2-bromopropane. Markovnikov's Rule is obeyed.

Answer 2

Explanation:

Peroxide effect:-

It is actually the addition of br.

◾In the absence of peroxides, hydrogen bromide is added to the alkenes

⚫ according to the Markovnikov's rule but in the presence of peroxides, the position of addition is actually exactly reversed.

◾This reversal of the orientation or rotation of addition which is caused by the presence of peroxides is known as the peroxide effect/Khrasch effect

◽Only the addition of hydrogen bromide shows the peroxide effect.

◽ And , The presence or whether absence of peroxides has no effect on the orientation of addition of

⚪ hydrogen chloride,

⚪hydrogen iodide,

⚪sulfuric

⚪acid,

⚫water, etc.