A solution of propanol is placed in a capped flask. Which of the following would increase the vapor pressure of propanol? I. Add more propanol to the flask. II. Increase the surface area of the liquid by placing it in a wider flask. III. Increase the temperature.
(A) II only.
(B) III only.
(C) I and III only.
(D) II and III only.
(E) I, II, and III.
(A) II only.
(B) III only.
(C) I and III only.
(D) II and III only.
(E) I, II, and III.
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(B) III only is the correct answer.
As long as there is any liquid remaining, the volume of the liquid does not affect the vapor pressure, so I is not correct. II is incorrect for the same reason..The surface area does not affect vapor pressure. The only thing that does is changing the temperature. Increasing the temperature will increase the vapor pressure.
As long as there is any liquid remaining, the volume of the liquid does not affect the vapor pressure, so I is not correct. II is incorrect for the same reason..The surface area does not affect vapor pressure. The only thing that does is changing the temperature. Increasing the temperature will increase the vapor pressure.
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1 and 3.
Choice 2 has no effect
Choice 2 has no effect