Chapter 22, Problem 3TC

Rank the following molecule in order of the increasing solubility in water.

To determine

The ranking of the molecules in increasing order of their solubility in water.

Answer to Problem 3TC

Solubility of C molecule is highest then B and A has least solubility. Increasing order of solubility in water is $\text{A<B<C}$.

Explanation of Solution

A) There are no OH group present in the molecule hence there will be no formation of the H-bond between the water molecule and butane molecule. Hence,it is insoluble.

B) Here OH group is present but the number OH group present in C are more than that of B so even though it will form H-bonding with water molecule the solubility is less than that of C molecule.

C) The number of OH group is highest so the solubility of C molecule is highest as more H-bonding formed with water is highest.

Conclusion:

Therefore, Solubility of C molecule is highest then B and A has least solubility. Increasing order of solubility in water is $\text{A<B<C}$.