Except for the very small alkanes `(C_(1) to C_(4))`, the boiling point rises…..degrees of each `C` that is added to the chain.

Options

A. `20 "to" 30`
B. `30 "to" 40`
C. `10 "to" 15`
D. `15 "to" 25`

Answer

A

Explanation

Each alkane except methane differs from the preceding alkane by one `-CH_(2)`-group. A series of compounds like this, where each member differs from the next member by a constant unit, is called a homologus series. Members of a homologus series are called homologus series.