Rank these hydrocarbons in order from predicted highest boiling point to lowest boiling point: Rank from highest boiling point to lowest boiling point. To rank items as equivalent, overlap them. A. CH3CH3
B. CH3CH2CH3
C. CH3CH2CH2CH3
D. CH3CH(CH3)2

Arrangements of the hydrocarbon from the highest boiling point to the lowest is shown below

C--> D--> B--> A

Explanation:

Hydrocarbons are compounds which contains carbon and hydrogen only. The options given are all saturated because all the four bonds of the carbon are single bonds. The bonds could be a carbon- hydrogen bond or a carbon- carbon bond.

The boiling point of Hydrocarbons can be affected by the following factors:

--> Number of carbon atoms

--> molecular weight

Boiling point depends on the length of the carbon chain, it increases as number of carbon increase. That is the main reason why butane (option C) has the highest boiling point than the rest of the hydrocarbons with ethane( option A) being the one with lowest boiling point.

Increase in molecular weight Increases the boiling point of hydrocarbons. That is the reason why 2-methylpropane (option D) has a higher boiling point than propane( option B) because it has higher molecular weight.

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