# Question 271b0

Sep 14, 2017

The order is

"CH"_3"CH"_2"CH"_2"CH"_2"CH"_2"OH" > "CH"_3"CH"_2"CH"_2"CH"_2"OH" > "CH"_3"CH"_2"CH"_2"OH" > "CH"_3"CH"_2"OH"

#### Explanation:

The alcohol with the strongest surface tension will be the one with the strongest intermolecular forces.

In each alcohol, the strongest intermolecular force is hydrogen bonding caused by the $\text{OH}$ group.

However, as the nonpolar hydrocarbon chain grows longer, it "dilutes" the effect of the hydrogen bonding.

Thus, the alcohol with the shortest chain will have the strongest surface tension.

∴ The order is

"CH"_3"CH"_2"CH"_2"CH"_2"CH"_2"OH" > "CH"_3"CH"_2"CH"_2"CH"_2"OH" > "CH"_3"CH"_2"CH"_2"OH" > "CH"_3"CH"_2"OH"#