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Why does isopropyl alcohol evaporate quickly?

Answer 1

Because the intermolecular force is relatively weak.

The intermolecular forces that operates between isopropanol molecules are (i) hydrogen bonding, and (ii) dispersion forces between the alkyl residues. (i) is probably the most significant contributor, and it reduced by comparison with say, water, because there is only the one #""^(delta-)O-H^(delta+)# dipole in isopropanol.

As a chemist, as a physical scientist, you should look up the normal boiling points of water, isopropyl alcohol, #n#-propanol, and ethyl alcohol, and see if you can identify any other significant contributors.

How do intramolecular and intermolecular forces differ from one another?

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Answer 2

Isaac Aronson

Isopropyl alcohol evaporates quickly due to its low boiling point, which is around 82.6 degrees Celsius (180.7 degrees Fahrenheit).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.