Single Choice

Which one of the following has the lowest boiling point?

A$$CH_{3}Cl$$
Correct Answer
B$$C_{2}H_{5}Cl$$
C$$C_{2}H_{5}Br$$
D$$C_{2}H_{5}I$$

Solution

Figuring out the order of boiling points is all about understanding trends. The key thing to consider here is that, boiling points reflect the strength of forces between molecules. As the molar mass increases the boiling point increases.

There are 3 important trends to consider:
The relative strength of the four intermolecular forces is: ionic > hydrogen bonding > dipole dipole > van der Waal's dispersion forces. The influence of each of these attractive forces will depend on the functional groups present.

Boiling point increase as the number of carbons is increased. Branching decreases boiling point.


SIMILAR QUESTIONS

Haloalkanes and Haloarenes

Arrange the following compounds in increasing order of their boiling points. I. $${ CH }_{ 3 }{ CH }_{ 2 }{ CH }_{ 2 }Br$$ II. $${ CH }_{ 3 }{ CH }_{ 2 }{ CH }_{ 2 }{ CH }_{ 2 }Br$$ III. $${ \left( { CH }_{ 3 } \right) }_{ 2 }{ CH }{ CH }_{ 2 }Br$$ IV. $${ \left( { CH }_{ 3 } \right) }_{ 3 }CBr$$

Haloalkanes and Haloarenes

Which of the following has highest boiling point?

Haloalkanes and Haloarenes

Which of the following compounds has the highest boiling point?

Haloalkanes and Haloarenes

Arrange the given set of compounds in order of increasing boiling point: I. 1-chloropropane II. Isopropyl chloride III. 1-chlorobutane

Haloalkanes and Haloarenes

Arrange the following in the increasing order of boiling points: $$n-$$Butane, $$n-$$Butanol, $$n-$$Butyl chloride, iso-butane.

Haloalkanes and Haloarenes

Which of the following has the highest boiling point?

Haloalkanes and Haloarenes

Arrange the following in the decreasing order of their boiling points :

Haloalkanes and Haloarenes

Arrange each of the following sets of compounds in order of increasing boiling points: Propane, 1-chloropropane, isopropyl chloride, 1-chlorobutane.

Haloalkanes and Haloarenes

Arrange the following in order of increasing boiling points n-amyl chloride , neoamyl chloride , tert-amyl chloride , isoamyl chloride.

Haloalkanes and Haloarenes

Arrange the following in order of increasing boiling points n-hexyl chloride , n-pentyl chloride , tert-butyl chloride , n-propyl chloride , sec-butyl chloride.

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