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Hydrocarbons
How is acetylene obtained from:
(i) Ethylene dibromide?
(ii) Tetrabromoethane ?
(i) From ethylene dibromide: Acetylene is prepared by treating ethylene dibromide with an alcoholic solution of potassium hydroxide.
(ii) From tetrabromo ethane. Acetylene is prepared by heating tetrabromo ethane with zinc dust.
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During the pyrolysis of alkanes C-C bonds break in preference to C-H bond. Why?
Define cracking.
What is the function of iodic acid in the iodination of alkanes? Can we use any other substance in its place?
What is alternation effect?
Arrange the following compounds in order of their increasing boiling points:
n-Pentane, n-Hexane, Ethane, 2-2-Dimethylpentane, 2-Methylpentane.
Why is light or heat necessary to initiate chlorination reaction of alkanes?
What are conformation or rotational isomers?
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