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Hydrocarbons
(i) The addition of water: Acetylene reacts with water in the presence of dilute sulphuric acid and mercuric sulphate to form an unstable product which undergoes rearrangement to give acetaldehyde.
(ii) The addition of hydrogen cyanide: Acetylene reacts with hydrogen cyanide in the presence of barium cyanide to form vinyl cyanide.
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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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