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From: Andrew Usher on 3 Jun 2010 20:13
Uncle Al wrote:

> http://scholar.google.com/scholar?q=critical+point+of+salt+solutions
>
> Perhaps you should read your references before using them as a straw
> man's armature.
>
> Hey stooopid do - do you know what thermodynamic critical constants
> are? No, you do not.

Of course I do.

> For water,
>
> Tc = 374 C
> Pc = 22 MPa, 220 bar
>
> Venus' surface temperature = 460 C
> Venus' surface pressure = 93 bar
>
> All the salt on Venus would not make a sparrow's fart of difference.

Right, but for the wrong reason. You don't know (without looking it
up) that no salt solution would be liquid at that temperature and
pressure - in fact some would, but none of the salts likely to occur
naturally.

> The temp is too high and the pressure is too low for colligative
> properties to have any effect on outcome.

Of course, I wasn't speaking of Venus _today_ but of Venus when it
still had water vapor and perhaps a 500 bar H2O atmosphere. Then, it
would have had salty oceans.

Andrew Usher
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