Question

which lists straight - chain alkanes from lowest to highest boiling point? butane, hexane, propane, octane ethane, pentane, heptane, octane methane, nonane, butane, octane decane, hexane, butane, propane

Explanation:

The boiling - point of straight - chain alkanes increases with an increase in the number of carbon atoms due to stronger London dispersion forces. Ethane has 2 carbon atoms, pentane has 5, heptane has 7, and octane has 8. This follows the trend of increasing boiling - point.

Answer:

ethane, pentane, heptane, octane