Date: Mon, 11 Jul 2005 09:29:01 EDT
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: DanielD734**At_Symbol_Here**AOL.COM
Subject: Re: H2 pressure vs HF pressure
```According to the Gas Data Book, Sixth Edition, from Matheson:

Anhydrous HF boils at 19.5 deg C. It is shipped in cylinders under its own
vapor pressure of 0.3 psi at 20 deg C.

Hydrogen boils at -252.8 deg C.

Assume the dimensions of a lecture bottle are 5 cm x 30 cm. This gives a
volume of 0.589 liter. Assume one mole of hydrogen is formed in the lecture
bottle. Plug these numbers into the ideal gas equation at 20 deg C.

PV = nRT

P = 40.8  atm or 600 psi

That's a huge increase in pressure!!!!
```

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