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Hydrocarbons
The reaction between alkenes and chlorine or bromine in the presence of water leads to the formation of halohydrins. In general, the reaction can be represented as:
Mechanism. It is an electrophilic addition reaction involving the following steps:
Step I. Formation of carbocation:
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Alkanes are less reactive. Why?
Out of n-pentane, isopentane and neopentane which has lower boiling point?
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?
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