If you have correwctly calculated all intial and finals states the answer is yes!
On Fri, Jan 16, 2009 at 10:02 PM, Roberto Veiga <roberto.ve...@ymail.com>wrote: > Hello, > > if I have a substitution reaction as follows: > > AB+CD-->AC+BD > > and I calculate the four systems isolated with Siesta, can I calculate the > enthalpy of such a reaction as stated by the Hess's law? Or there is any > subtlety? > > Thanks in advance, > > Roberto > >