Question #85471

1 Answer
Dec 2, 2016

They're pretty much the same, with small differences in London forces.


All three molecules contain an #"OH"# group, so they can all form hydrogen bonds - relatively strong IMFs that require a high amount of energy to break. The only difference is the strength of the other IMFs. Vinegar is the longest molecule, thus it has the most points of contact, meaning it has the strongest London interactions. The next is alcohol, and then water.

However, water can form the strongest hydrogen bonds. The effect of this cancels out the stronger London interactions of the other two molecules, meaning that water has the strongest intermolecular forces of all three molecules.