Question 25
Change of State and VapoursWhich of the following statements is NOT correct?
- A.Boiling occurs when the saturated vapour pressure of the liquid involved equals the external pressure
- B.Both the boiling point and the saturated vapour pressure of a given liquid depend on the external pressure
- C.The saturated vapour pressure rises with increase in temperature
- D.The saturated vapour pressure is independent of the volume available for the vapour.
- E.It is possible to boil water at a lower temperature than 100°C at high altitude.
Show the answer and explanation
Answer: B (Both the boiling point and the saturated vapour pressure of a given liquid depend on the external pressure)
Explanation
The boiling point depends on external pressure, but the saturated vapour pressure depends only on temperature.