Refer to the figures below. The correct ranking of these compounds in order of lowest to highest heat capacity per mole of compound is B

Question

Refer to the figures below.  The correct ranking of these compounds in order of lowest to highest heat capacity per mole of compound is B < A < C.Which property would most likely be responsible for this trend?

Quizplus · Accepted Answer

The trend in heat capacity can be attributed to the ability of the compound to form hydrogen bonds. Hydrogen bonds are strong intermolecular forces that require significant energy to break. Compound C is capable of forming more hydrogen bonds due to its greater number of hydrogen bond donors and acceptors (oxygen and nitrogen atoms), leading to a higher heat capacity. Compound A has fewer hydrogen bonding groups and therefore a slightly lower heat capacity than compound C. Compound B has the fewest hydrogen bonding groups and thus the lowest heat capacity.

Refer to the Figures Below