Concept:Vapour pressure depends on how easily liquid particles escape into the vapour phase.
Explanation:Vapour pressure increases with temperature because more particles gain enough kinetic energy to escape.
It also depends on cohesive forces holding particles together.
Stronger cohesive forces make escape harder, so vapour pressure is lower.
The rate of condensation is not an independent factor.
In equilibrium, condensation rate and evaporation rate balance each other and adjust automatically.
Therefore, vapour pressure depends only on temperature and cohesive forces.
Thus, factors
I and
III are correct.
Answer:C. I and III