Question

two liquids x and y have boiling pont 70 degree celsius and 120 degree celsius . from this information common on their interparticle force of attraction

Answer 1

Explanation:

All substances experience dispersion forces between their particles. Substances that are polar experience dipole-dipole interactions. Substances with covalent bonds between an H atom and N, O, or F atoms experience hydrogen bonding.

Answer 2

Vapour pressure correlates with boiling point inversely. In this case liquid A has a lower boiling point and thus will have higher vapour pressure. Since liquid A has a lower boiling point you can assume that its inter-molecular forces are weaker. Therefore, it is much more likely to become a vapour at lower temperatures and more vapour means more pressure.