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Hydrocarbons

Long Answer Type

181.

Give two reactions of electrophilic addition on acetylene along with their mechanism.

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182. Give two reactions of electrophilic addition on acetylene along with their mechanism.

(i) The addition of halogen: Chlorine and bromine add on to acetylene to form addition product.

Mechanism: It involves electrophilic addition and consists of the following steps:

Step II. The electrophilic addition is repeated again when the final compound gets formed.

(ii) The addition of hydrogen halides. The hydrogen halides (HCl, HBr or HI) add-on triple bond to give rise to haloalkene or haloalkane.

Mechanism: It involves electrophilic addition and consists of the following steps:

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183.

How do alkynes react with hypochlorous acids? Discuss its mechanism.
Or
$HC space identical to space CH space rightwards arrow with Cl subscript 2 divided by straight H subscript 2 straight O on top space CHCl subscript 2 space minus space CHO$