ne1 tell about method size of oleic acid molecule - Physics - Units And Measurements

Question

ne1 tell about method size of oleic acid molecule

Jyoti Pant · Accepted Answer

Oleic acid has one hydrophobic and one hydrophilic end If a
small amount of oleic acid is placed on the surface of water, it
stands on end with the hydrophilic end towards the water and the
hydrophobic end away
We find the size of one oleic acid molecule by spreading a small
amount over the surface of water and measuring the diameter of the
circle The oleic acid spreads itself into a one-molecule thick
layer in the shape of a very flat cylinder
By knowing the volume of the drop of oleic acid and the diameter
of the layer, the height of the layer (size of the molecule) can be
found