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Question
You are given the following molecular formulae of some hydrocarbons:
C5H8; C7H14; C6H6; C5H10; C7H12; C6H12
Which two formulae represent unsaturated hydrocarbons having triple bonds?
Solution
C5H8 and C7H12 are the molecular formulae for the unsaturated hydrocarbons comprising triple bonds, as they correspond to the general formula of alkynes, i.e. CnH2n-2, where n is the number of carbon atoms in its one molecule.
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