Chemical Forums

Chemistry Forums for Students => Physical Chemistry Forum => Topic started by: kyng on April 21, 2010, 08:33:07 AM

Title: Calculating/finding Enthalpy
Post by: kyng on April 21, 2010, 08:33:07 AM

Can I calculate  :delta:H at 0 K if i know it on 298 K? Or is it only experimentally found, so i should look it up from some kind of index.

The reaction is C + CO₂ ::equil:: 2CO

Title: Re: Calculating/finding Enthalpy
Post by: Schrödinger on April 21, 2010, 09:00:13 AM

Don't we assume every molecule to be perfectly rigid and stationary at 0K? In that case, there would be no collisions, and hence no reaction as well. So, :delta:H would be zero, right?
Please forgive me if I am wrong