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Conclusions

Dealing with n-alcohols where n = 1,2,…,5 the Marangoni forces acting on the drop dominate the dissolution and overpower the cohesive forces between the molecules. This results in the drop being completely dissolved within a fraction of a second. For n = 10 and higher the molecule-to-molecule bonds of the drop mask any Marangoni forces present. It is in the intermediate range where n = 6 – 9 that the cohesive and Marangoni forces are dually expressed in the visible dissolution of the drops. It is in this range of n-alcohols that allow the drop to remain whole long enough for Marangoni forces to be observed and dissolve enough for there to be reasonable surface tension gradients. This is where the dissolution takes on such unique observable characteristics as the boomerang breakup, the divorce, and fingering.