1.

A hydrocarbon C_(5)H_(10) does not react with chlorine but gives a single monochloro compound, C_(5)H_(9)Cl in bringht sunlight. Identify the hydrocarbon.

Answer»

SOLUTION :(i) The HYDROCARBON with M.F. `C_(5)H_(10)` can be either a cycloalkane or an alkene.
(ii) Since the hydrocarbon does not react with `Cl_(2)` in TH dark, it cannot be an alkene but must be a cycloalkane.
(iii) Since the cycloalkane reacts with `Cl_(2)` in the presence of bright sunlight, to GIVE a single monochloro compound, `C_(5)H_(9)Cl`, therefore, all the ten hydrogen atoms of the cycloalkane must be equivalent. thus,


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