problem 8.29

[azirenorfleet3B]

8.29 Which molecular substance do you expect to have the higher molar heat capacity, NO or NO2? Why?

[PranithaPrasad]

You would expect NO2 to have the higher molar heat capacity since it has more atoms within the molecule, and more atoms within the molecule means more bond variation, so it takes more energy to break the bonds of NO2 than it does to break the bonds of NO.

[Adrienne Dang 1B]

Yes, in general molar heat capacity increases with molecular complexity, because with more complex molecules, there are more possible bond vibrations that can absorb the added energy, making the heat capacity higher for the molecule.