posted by Saira .
Rank these liquids by their expected surface tension.
Rank from greatest to least surface tension.
So as Dr. Bob mentioned to me before surface tension is how the surface molecules stick together. Does that mean 1 has the highest surface tension.
I would think 4 would have the highest surface tension because you have three OH groups and that will provide more opportunities for hydrogen bond formation. With that in mind, note that #3 has two OH groups, #2 has 1 OH group, and #1 has no OH groups.
rank in order of most oh groups to least that will be the same as highest surface tension to lowest
4,3,2,1 is the right answer the more OH group the highest surface tension.