Question

Boiling points of alkyl chloride and alkyl iodide have been compared with alkane.
$\begin{array}{ccc}& & BoilingPoint\\ n-butylchloride& \left(92.5gmo{l}^{-1}\right)& {78.4}^{\circ }C\\ n-hexane& \left(86.2gmo{l}^{-1}\right)& {68.7}^{\circ }C\\ methyliodide& \left(142gmo{l}^{-1}\right)& {42.5}^{\circ }C\\ n-decane& \left(142gmo{l}^{-1}\right)& {164}^{\circ }C\end{array}$

Boiling point of n-hexane is about same as of n-butyl chloride (of same molar mass), while boiling point of n-decane is higher than that of methyl iodide (of same mass). This is due to which of the following?

• A. Greater molecular volume of alkanes than alkyl iodide.
• B. Compensation of polar effects and molecular volumes in alkyl chloride and alkanes.
• C. Both (a) and (b)
• D. None of the above

Answer 1

The correct option is C Both (a) and (b)

Both (a) and (b)