# Why does chlorine become stable?

We have an equation in our book

$$\ce{2Cl- (aq) + 2H2O -> 2OH-(aq) + H2(g) + Cl2(g)}$$

Why does chlorine become stable if it is electronegative? Chlorine has excess of electrons, but later loses electron to become stable.

Is chlorine more stable than chloride?

• For this process we need energy, and in this process called the chlor-alkali process, the energy is given by a electrolysis of the choride solution. – Prachurjya Biswas Dec 30 '16 at 8:07
Rather, chemistry is about following the pathway which leads to the greatest accessable reduction in Gibbs free energy $\Delta G$. If energy, in your case electricity, is supplied from the outside, the system’s Gibbs free energy may even be minimised by reacting towards substances with a lesser standard heat of formation.