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?
Correct answer: B. >4.630 torrs
- A. 4.63 torr
- B. >4.630 torrs
- C. <4.73 torr
- D. 47.07
Explanation
The increase is from 527.8 torr to 760 torr when temperature changes from 90°C to 100°C. Mentioned on page 90 of punjab book and on page 128 on its e-book under vapour pressure increases with temperature.
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.
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.