backward reaction
 

Hi! I have a bit of trouble with backward reactions. I am trying to model air at high temperatures, as it dissociates. I use finite rate chemistry for the dissociation reactions. My problem is when I turn on the backward reaction It makes all reaction rates go to zero in a few iterations, even at temperatures where they should be high! If someone could help me get reactions working backward and forward at the same time, I would be very happy! thank you in advance. Alexandra