Question

Does a substance that evaporates more quickly (thus having a greater δt) have a higher or lower force of attraction to other molecules in the liquid compared to a substance that evaporates more slowly (smaller δt)? explain.

Answer 1

Substances that evaporate faster have a lower force of attraction between the molecules in the liquid. When the inter-molecular forces of attraction are weak, the amount of energy required to break the bonds will be lesser than for those with stronger inter-molecular forces. The weak bond can even be broken by room temperature.