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Which lists straight chain alkanes from lowest to highest boiling point?

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

Which has a higher boiling point hexane or butane?

But, the forces in hexane will be stronger than those in butane because hexane molecules are larger and therefore capable of more extensive Dispersion Forces between each other than the molecules of butane. For this reason, hexane has a higher boiling point than butane.

Does propane or hexane have a higher boiling point?

The Saturated Hydrocarbons, or Alkanes

Name Molecular Formula Boiling Point (oC)
propane C3H8 -42
butane C4H10 -0.5
pentane C5H12 36
hexane C6H14 69

Why does boiling point increase from methane to propane?

Because propane is larger there will be more London attraction forces holding propane molecules together compared to ethane and methane, so propane will have higher melting and boiling points.

Why is water’s boiling point higher than ethanol?

There are less extensive hydrogen bonding between ethanol molecules than between water molecules, thus less energy is needed to vaporise ethanol than water and water has a higher boiling point than ethanol.

Why does propane have a low boiling point?

Melting and Boiling Point Alkanes have low melting or boiling points because of the very weak intermolecular forces between alkane molecules. Methane, ethane, propane, and butane are gases at room temperature. As a result, it takes more energy to break these forces, and thus the melting or boiling points increase.

What causes a low boiling point?

When small molecular substances melt or boil, it is these weak intermolecular forces that are overcome. The covalent bonds are not broken. Relatively little energy is needed to overcome the intermolecular forces, so small molecular substances have low melting and boiling points.

Does propane have a high or low boiling point?

Propane is a popular choice for barbecues and portable stoves because the low boiling point of −42 °C (−44 °F) makes it vaporize as soon as it is released from its pressurized container.