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At a given temperature one liquid has a vapour pressure of 240 torr and another has a measure of 420 torr. Which liquid has the lower boiling point? Which probably has the lower heat of vaporization?
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At a given temperature one liquid has a vapour pressure of 240 torr an...
The liquid with the lower vapour pressure (240 torr) has the lower boiling point.
The boiling point of a liquid is the temperature at which its vapour pressure is equal to the atmospheric pressure. When the vapour pressure of a liquid is lower, it takes more heat energy to raise the vapour pressure to the atmospheric pressure, which means that the liquid has a lower boiling point.
The liquid with the lower vapour pressure (240 torr) also probably has the lower heat of vaporization. The heat of vaporization is the amount of heat energy required to vaporize a given amount of a substance. Generally, it takes less heat energy to vaporize a substance with a lower vapour pressure, so the liquid with the lower vapour pressure (240 torr) probably has the lower heat of vaporization.
The boiling point of a liquid is the temperature at which its vapour pressure is equal to the atmospheric pressure. When the vapour pressure of a liquid is lower, it takes more heat energy to raise the vapour pressure to the atmospheric pressure, which means that the liquid has a lower boiling point.
The liquid with the lower vapour pressure (240 torr) also probably has the lower heat of vaporization. The heat of vaporization is the amount of heat energy required to vaporize a given amount of a substance. Generally, it takes less heat energy to vaporize a substance with a lower vapour pressure, so the liquid with the lower vapour pressure (240 torr) probably has the lower heat of vaporization.
Community Answer
At a given temperature one liquid has a vapour pressure of 240 torr an...
Which liquid has the lower boiling point?
- The liquid with the lower vapour pressure has the lower boiling point.
- Therefore, the liquid with the vapour pressure of 240 torr has the lower boiling point.
Which probably has the lower heat of vaporization?
- The liquid with the lower heat of vaporization will have the higher vapour pressure at a given temperature.
- Therefore, the liquid with the vapour pressure of 420 torr has the lower heat of vaporization.
Explanation
- The boiling point of a liquid is the temperature at which its vapour pressure equals the atmospheric pressure.
- The vapour pressure of a liquid is the pressure exerted by its vapour when it is in equilibrium with its liquid phase.
- The heat of vaporization is the amount of heat required to vaporize a unit mass of a liquid at its boiling point.
- When a liquid has a lower heat of vaporization, it requires less heat to convert it into its vapour phase.
- As a result, it will have a higher vapour pressure at a given temperature compared to a liquid with a higher heat of vaporization.
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At a given temperature one liquid has a vapour pressure of 240 torr and another has a measure of 420 torr. Which liquid has the lower boiling point? Which probably has the lower heat of vaporization?
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At a given temperature one liquid has a vapour pressure of 240 torr and another has a measure of 420 torr. Which liquid has the lower boiling point? Which probably has the lower heat of vaporization? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about At a given temperature one liquid has a vapour pressure of 240 torr and another has a measure of 420 torr. Which liquid has the lower boiling point? Which probably has the lower heat of vaporization? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for At a given temperature one liquid has a vapour pressure of 240 torr and another has a measure of 420 torr. Which liquid has the lower boiling point? Which probably has the lower heat of vaporization?.
At a given temperature one liquid has a vapour pressure of 240 torr and another has a measure of 420 torr. Which liquid has the lower boiling point? Which probably has the lower heat of vaporization? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about At a given temperature one liquid has a vapour pressure of 240 torr and another has a measure of 420 torr. Which liquid has the lower boiling point? Which probably has the lower heat of vaporization? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for At a given temperature one liquid has a vapour pressure of 240 torr and another has a measure of 420 torr. Which liquid has the lower boiling point? Which probably has the lower heat of vaporization?.
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