How would I figure out the boiling point of water on the surface of Titan?

[Shawn]

i'm confused.

 

[compnovice]

Depends, does Titan have an atmosphere?

 

[BigJ]

http://www.biggreenegg.com/boilingPoint.htm

What's the atmospheric pressure of Titan?

 

[Shawn]

Originally posted by: BigJ
http://www.biggreenegg.com/boilingPoint.htm

What's the atmospheric pressure of Titan?

the pressure is 146.7kPa according to wikipedia.

 

[Bootprint]

Phone ESA and ask for the someone who worked on the Cassini-Huygens probe.

link


I'm guessing 130 c.

 

[Goosemaster]

pv / (nr) = t = pv / (nr)

 

[Itchrelief]

Originally posted by: Goosemaster
pv / (nr) = t = pv / (nr)

I would think a phase diagram would be a better bet.

Is the ideal gas law directly applicable to this situation? I mean, every liquid does not behave the same as regards to its vaporization.

 

[Goosemaster]

.

 

[Shawn]

ok this is how I did it:

T2 = 1 / ( 1/T1 - (R/Hvap x ln(P1/P2)

T2 = 1 / (1/373K - ((8.314 J/mol K / 40.65x10^3 J/mol)(ln 146.7/101.3))
T2 = 384k - 276K = 108C

does that seem right?

 

[JEDIYoda]

Originally posted by: Shawn
ok this is how I did it:

T2 = 1 / ( 1/T1 - (R/Hvap x ln(P1/P2)

T2 = 1 / (1/373K - ((8.314 J/mol K / 40.65x10^3 J/mol)(ln 146.7/101.3))
T2 = 384k - 276K = 108C

does that seem right?

Very good my young Jedi!

 

[Biggerhammer]

You never thought of just giong there with a teakettle and a heat plate?

 

[iwantanewcomputer]

actually, 110.7C. Ideal gas law will give you an approximation at small changes, but not true. P-V-T phase diagrams do not vary linearly. look it up in any standard saturated steam table.

 

[Itchrelief]

Originally posted by: iwantanewcomputer
actually, 110.7C. Ideal gas law will give you an approximation at small changes, but not true. P-V-T phase diagrams do not vary linearly. look it up in any standard saturated steam table.

Yeah, I meant to, um, say what he said, yeah...
Uh huh, yup...