If we provide very high amount of heat to a liquid its boiling point will__________________?
Correct answer: B. remains constant
- A. increase
- B. remains constant
- C. decrease
- D. there will be no boiling
Explanation
At the boiling point, the liquid vapour pressure equals the external pressure, and additional heat is used to overcome intermolecular attractions and convert liquid into vapour rather than raise the temperature. Students may choose option a by assuming that supplying more heat always increases temperature, but the temperature remains constant during boiling at fixed pressure.
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.
More Evaporation, Boiling Point and Vapour Pressure questions
Which one is false for evaporation ?
Steam causes more sever burn than the boiling water because it possesses _________________?
The conversion of vapours back into their liquid state is called__________________?
Which one of the following has highest volatility_________________?
Vapour pressure is not affected by_______________?
Formation of vapours from the surface of a liquid is called________________?