Concept:Vapor pressure is an intensive property. It depends on the intrinsic nature of the liquid and the ambient thermal conditions, not on the macroscopic quantity of the substance.
Formula:Not applicable.
Solution:- Vapor pressure depends heavily on Temperature (higher temp = higher kinetic energy = higher VP).
- It depends on Intermolecular forces (stronger IMF = lower VP).
- It depends on the Size of the molecule (larger size generally implies higher polarizability/dispersion forces, affecting VP).
- However, whether you have a small beaker or a massive ocean of a specific liquid, at a given temperature, the equilibrium vapor pressure pushing back against the atmosphere remains exactly the same. Therefore, the "Amount of liquid" does not affect VP.
Why other options are incorrect:Options B, C, and D physically restrict or enhance a molecule's ability to escape the liquid phase.
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