Why does CS2 have a higher boiling point than CO2?

What factors contribute to CS2 having a higher boiling point than CO2?

a) CS2 has a higher boiling point than CO2 despite having similar intermolecular forces because it has a larger molar mass.

b) CO2's boiling point is higher due to its linear molecular shape.

c) CS2 has a lower boiling point than CO2 because of its smaller molar mass.

d) Intermolecular forces do not affect the boiling point of CS2.

Explanation:

The boiling points of substances can be largely influenced by the strength of their intermolecular forces and molar mass. Molecules such as CS2 and CO2 have different boiling points due to these factors. CS2 is an example of a compound that has a higher boiling point as it has a larger molar mass, whilst CO2, although bearing a similar structure, has a lower boiling point.

Intermolecular forces indeed play a significant role in determining a substance's boiling point. For instance, larger and heavier molecules generally exhibit stronger dispersion forces than smaller and lighter molecules. London dispersion forces among other intermolecular forces usually increase with molecular weight or molar mass. Therefore, a molecule like CS2 with a larger molar mass will likely have a higher boiling point than a molecule like CO2 which has a smaller molar mass.