Q1 of 23 Page 157

Write the molecular formula of an alkene and alkane with twenty carbon atoms.

The general molecular formula of an alkane is written as CnH2n+2, and the general formula of an alkene is written as CnH2n where ‘n’ is the number of carbon atoms.

Now for n=20, the molecular formula of


a) alkane will be C20H2x20+2 or C20H42


b) alkene will be C20H2x20 or C20H40


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