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?
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.