Question

evaporation rate to determine the strength of intermolecular forces. stronger intermolecular forces result in a lower vapor pressure and require more energy for the substance to boil. the data below shows the boiling point of four substances, all of which contain one hydrogen bond. | compound | boiling point (°c) | |---|---| | w | 78.4 | | x | 64.7 | | y | 117.7 | | z | 97.1 | which compound exhibits the strongest overall intermolecular forces? - compound y - compound w - compound z - compound x

Explanation:

Step1: Recall boiling point and intermolecular forces

Stronger intermolecular forces → higher boiling point (needs more energy to boil).

Step2: Compare boiling points of compounds

Boiling points: Y(117.7°C) > Z(97.1°C) > W(78.4°C) > X(64.7°C).

Step3: Identify compound with highest boiling point

Compound Y has the highest boiling point, so it has the strongest intermolecular forces.

Answer:

compound Y