TestUstad

Vapour pressure is inversely proportional to:

Correct answer: B. Intermolecular force

  • A. Temperature
  • B. Intermolecular force
  • C. Surface area
  • D. All

Explanation

Vapour pressure is inversely proportional to the strength of intermolecular forces. This means that the stronger the intermolecular forces, the lower the vapour pressure. The most important parameter which controls the vapour pressure of a liquid is its temperature. At an elevated temperature, the kinetic energy of molecules is enhanced and capability to leave the surface increases.It causes the increase of vapour pressure. It also does not depend on surface area of a liquid.

Written and checked by , M.Phil ChemistryLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About Evaporation, Boiling Point and Vapour Pressure

Evaporation is the escape of higher-energy molecules from a liquid surface, while vapour pressure is the pressure exerted by vapour in equilibrium with that liquid. The topic distinguishes evaporation from boiling and relates both to temperature, intermolecular forces, surface area, atmospheric pressure and the boiling point.

Practise Liquids

350 free Liquids MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free Liquids testAll Liquids MCQs

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Chemistry questions like this

Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Lecturer Chemistry Test Chemistry80 MCQsSubject Specialist Chemistry Test Chemistry80 MCQsDUHS Chemistry45 MCQsETEA MDCAT Chemistry45 MCQsKMU Chemistry45 MCQsMDCAT Chemistry45 MCQsNUMS Chemistry40 MCQsECAT Chemistry30 MCQsETEA Engineering Admission Test Chemistry30 MCQsGIKI Chemistry30 MCQsNED Chemistry30 MCQsNET Chemistry30 MCQsPIEAS Chemistry30 MCQsBSN Entry Test Chemistry25 MCQs

More Evaporation, Boiling Point and Vapour Pressure questions

Vapour Pressure does not depends on:

Maximum vapour pressure is of:

Minimum vapour pressure is of:

Max boiling point is of:

Vapour pressure of water is 4.579 torr at 0°C and 9.209 torr at 10°C, so increase in vapour pressure from 0°C to 10°C is 4.630 torr. What will be the change in vapour pressure from 90°C to 100°C?

Which of the following has highest vapour pressure?