Chemistry Assignment: Molecules Of Fatty Acids (Essay Sample)

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Question one.
The angle θ of contact is zero degrees if the capillary walls are completely wet by the liquid, and so the cosine of theta is 1. On the other hand, if the liquid does not wet the capillary walls, it is assumed that the angle theta is one hundred and eighty degrees, and therefore the cosine of theta is -1. As such, the meniscus is lowered by distance h, in both cases, correct results can be obtained. The contact angles will not produce accurate result if the water used is not pure and the glass is not clean, as such, the result obtained for the surface tension will have a great deviation from the correct value.
Question two.
When many molecules of fatty acids are deposited onto a clean aqueous surface before t...