Engineering
Chemistry
Nucleophilic Substitution
Electrophilic addition
Carbocation
Question

Which of the following statements is / are true :

Major part of energy needed for the heterolysis of C–X bond in SN1 reaction mechanism is obtained by the solvation of X– by the polar protic solvent.

1-pentene gives two bromoalkenes with NBS.

Cl + H          HCl, is not the chain termination step during photochlorination of ethane.

Increase in the no. of phenyl ring at C of C–X causes a shift in mechanism from SN2 to SN1.

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Solution
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1-pentene give four products with NBS

Due to formation of more stable carbocation on increasing phenyl ring at C of C—X.

There is no formation of H during photohalogenation