- #1
ajassat
- 55
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I gather the following:
- A decrease in atmospheric pressure leads to a decrease in boiling point
- Thermodynamics explains this using mathematics
- A kinetic theory model can also be used to explain
I need to know:
- The science behind this occurring. Why does a lower atmospheric pressure result in a lower boiling point?
- How can we borrow concepts (including mathematical) from thermodynamics to explain why a lower atmospheric pressure results in a lower boiling point?
I have looked at:
- The Clausius-Clapeyron equation. When plotted as a function of pressure and temperature, it is seen that temperature is inversely proportional to pressure. Is this a sufficient explanation?
- Very brief explanations suggesting that molecules of a liquid have to do some sort of 'work' to push air molecules out of the way. A thinner atmosphere leads to less molecules of air to push away...so the energy required is greatly decreased (boiling point decreases). This is qualitative. How can we quantify this using mathematics?
I have asked this question before in a similar format on other forums. Replies don't usually answer my question. I would be grateful if the knowledgeable members of PF could answer my questions.
Regards,
Adam
- A decrease in atmospheric pressure leads to a decrease in boiling point
- Thermodynamics explains this using mathematics
- A kinetic theory model can also be used to explain
I need to know:
- The science behind this occurring. Why does a lower atmospheric pressure result in a lower boiling point?
- How can we borrow concepts (including mathematical) from thermodynamics to explain why a lower atmospheric pressure results in a lower boiling point?
I have looked at:
- The Clausius-Clapeyron equation. When plotted as a function of pressure and temperature, it is seen that temperature is inversely proportional to pressure. Is this a sufficient explanation?
- Very brief explanations suggesting that molecules of a liquid have to do some sort of 'work' to push air molecules out of the way. A thinner atmosphere leads to less molecules of air to push away...so the energy required is greatly decreased (boiling point decreases). This is qualitative. How can we quantify this using mathematics?
I have asked this question before in a similar format on other forums. Replies don't usually answer my question. I would be grateful if the knowledgeable members of PF could answer my questions.
Regards,
Adam