A hydrocarbon of pentane has two isomeric forms—n-pentane and iso-pentane. The molecular formula of the n-pentane is C %H ! @. Predict the molecular formula of the iso-pentane.

Question

A hydrocarbon of pentane has two isomeric forms—n-pentane and iso-pentane. The molecular formula of the n-pentane is C  %H  ! @. Predict the molecular formula of the iso-pentane.

matt101 · Answer

The molecular formula of both n-pentane and iso-pentane are the same; it is the structure that differs. In general, the number of hydrogen atoms in alkanes is 2 more than twice the number of carbon atoms. See the following diagrams:

matt101 · Answer

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