# How would we prepare metallic sodium and gaseous chlorine from sodium chloride?

Sep 13, 2015

#### Answer:

In other words you want to do the reverse of the Born Haber cycle.

#### Explanation:

In the Born Haber cycle, the energetics of the formation of ionic salts are exhaustively measured and estimated. Formation of salt is thermodynamically downhill. In principle, $N {a}^{+}$ could be reduced down to sodium metal; it would take a lot of energy and bother. $C {l}^{-}$ anion could be oxidized up to $C {l}_{2} \left(g\right)$ rather more easily.