Asked by Dee

why should you stop the reflux when the nitrogen dioxide (red gas) is no longer evolving? What is the concept of equilibrium?
Answered by DrBob222
You need to tell us specifically what experiment you are talking about and the equilibrium you have.
Answered by Nino
she is talking about conversion of benzaldehyde to benzilic acid. in a second part of the experiment where you convert benzoin to benzil, during the reflux, red gas is evolving
Answered by Dana
Yea, I'm talking about the experiment Nino said.