Question

Here's a question:What is the molecular formula and structural formula of the fourth member of the alkane series, and how many possible isomers of this compound exist?

Answer 1

The fourth member of the alkane series is butane. The molecular formula for butane is C4H10.The structural formula for butane is:CH3-CH2-CH2-CH3There are two possible isomers for butane:1. n-Butane  normal butane : This is the straight-chain isomer, which has the structural formula mentioned above.2. Isobutane  methylpropane : This is the branched isomer, with the structural formula:CH3  |CH3-C-CH3  |  HSo, there are 2 possible isomers for the fourth member of the alkane series, butane.