April 16, 2024, 01:44:29 PM
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Topic: Tables or calculator for pressure vapour for severals gases at a given temperatu  (Read 5979 times)

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Offline alphabeta

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Hello everyone,

I would like to find vapor pressure for severals gases at a given temperature, 278 K.
Do you have tables or a little calculator which uses those tables to do this please ?
I am using Linux by the way, if there is a good software to do it.
The gases are CO2, lithium chloride, methyl, and ammonia.

Thank you very much,

Offline curiouscat

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Tried Google / Wikipedia?

Offline alphabeta

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Of course!
You found something ?


Offline alphabeta

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Actually I have made a mistake in my question, sorry.

What I want is the Pressure of evaporation of those gases at a given temperature 278 K.
Thus, the pressure that permits at this temperature to have a spontaneous evaporation.

Thank you very much,

Offline curiouscat

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Actually I have made a mistake in my question, sorry.

What I want is the Pressure of evaporation of those gases at a given temperature 278 K.
Thus, the pressure that permits at this temperature to have a spontaneous evaporation.

Thank you very much,

That's the same as Vapor Pressure I think. Why do you think you made a mistake?

Offline alphabeta

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No no, I am speaking about the boiling point at 278 K of those gases.

Sorry for my poor explanation.

Offline curiouscat

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No no, I am speaking about the boiling point at 278 K of those gases.

That makes no sense (at least to me).

Try this:  What is the boiling point of water at 278 K? Does that have an answer? If you answer that maybe I'll know better what you are trying to find.

Offline Borek

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Perhaps you looking for pressures at which these gases boil at 278 K?
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline alphabeta

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Yes, a boiling point for a pure gas is definied by a Pressure and a Temperature.
I would like to find the pressure of the boiling point corresponding to the temperature 278 K for those gases.

Offline AWK

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Quote
The gases are CO2, lithium chloride, methyl, and ammonia.
The is no such gas.
AWK

Offline curiouscat

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Yes, a boiling point for a pure gas is definied by a Pressure and a Temperature.
I would like to find the pressure of the boiling point corresponding to the temperature 278 K for those gases.

So what's wrong about the links I gave you? Say,



From this graph at 278 K Pressure seems to be around 8000 mm Hg.

Did you have a look at those links at all?

Offline alphabeta

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Ok, sorry for disturbing you I think I have what I need.

Thank you a lot, I cannit explain what was wrong in my mind, but I think now it is clear.

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