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Hydrocarbons

Short Answer Type

171.

Give reduction of phenol ?

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Long Answer Type

172.

Discuss in brief the polymerisation reactions of alkenes ?

163 Views

Short Answer Type

173.

Enlist three uses of ethylene.

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Long Answer Type

174.
What are alkynes?

Alkynes. Open chain unsaturated hydrocarbons having the general formula C_nH_2n-2and containing one triple bond (– C ≡ C –) in their molecules are called alkynes or acetylenes e.g.

Alkynes are further classified as terminal and non-terminal according to as the triple bond is present at the end of the chain or in between the chain.

The hydrogen atom attached to the terminal carbon is known as acetylenic hydrogen and the anion formed by removing acetylenic hydrogen is called acetylide or alky nide ion.

Naming of alkynes:

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175.

For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of double or triple bond as indicated:

$left parenthesis straight i right parenthesis space space straight C subscript 4 straight H subscript 8 left parenthesis one space double space bond right parenthesis left parenthesis ii right parenthesis space straight C subscript 5 straight H subscript 8 space left parenthesis one space triple space bond right parenthesis$