Long Answer TypeDiscuss the free radical mechanism of addition of HBr to propene.
Or
Give the mechanism of addition of HBr to propylene in the presence of peroxide.
The addition of HBr to propene yields 2-broniopropane, while in the presence of benzoyl peroxide, the same reaction yields 1-bromopropane. Explain and give mechanism.
Short Answer TypeWhy peroxide effect is shown only by HBr and not by HCl or HI?
Or
Explain why Kharasch effect is shown by HBr only and not by HCl or HI.
Long Answer TypeHow do alkenes react with sulphuric acid? Discuss its mechanism.
Alkenes react with the sulphuric acid in cold to form alkyl hydrogen sulphates. The addition in case of unsymmetrical alkenes proceeds according to Markownikov's rule. 
Mechanism: It involves electrophilic addition reaction and consists of the following two steps:
(i) Electromeric effect and electrophilic attack:
(ii) Attack of nucleophile: The nucleophile released in the slow step combines with carbocation to give ethyl hydrogen sulphate.
Short Answer TypeLong Answer TypeShort Answer TypeWrite IUPAC names of the products obtained by the ozonolysis of the following compounds:
Pent - 2-ene
Write IUPAC names of the products obtained by the ozonolysis of the following compounds:
3, 4-Dimethlhept-3-ene
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