Select the pair of substances in which the one with the higher vapor pressure at a given temperature is listed first.

Question

Quizplus · Accepted Answer

In general, the substance with the higher vapor pressure at a given temperature is the one with weaker intermolecular forces. CCl4 and CBr4 have the same number of electrons and similar molecular shapes, but the bromine atom is larger and has more polarizability, leading to weaker intermolecular forces and a higher vapor pressure. Therefore, CBr4 has a higher vapor pressure than CCl4.

Select the Pair of Substances in Which the One with the Higher