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Question
You are given the following molecular formulae of some hydrocarbons:
C5H8; C7H14; C6H6; C5H10; C7H12; C6H12
Which three formulae represent open chain unsaturated hydrocarbons having double bonds?
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Solution
C7H14, C5H10 ,C6H12 are the molecular formulae for the open chain unsaturated hydrocarbons having double bonds, as they correspond to the general formula of alkenes, i.e. CnH2n, where n is the number of carbon atoms in its one molecule.
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