Editing Chloride (section)

==Production==
The [[chlor-alkali]] industry is a major consumer of the world's energy budget. This process converts concentrated sodium chloride solutions into chlorine and sodium hydroxide, which are used to make many other materials and chemicals. The process involves two parallel reactions:
:2&nbsp;Cl<sup>−</sup> → {{chem|Cl|2}} + 2&nbsp;[[electron|e<sup>−</sup>]]
:2&nbsp;{{chem|H|2|O}} + 2&nbsp;e<sup>−</sup> → H<sub>2</sub> + 2&nbsp;OH<sup>−</sup>
[[Image:Chloralkali membrane.svg|thumb|center|600px|Basic membrane cell used in the [[electrolysis]] of brine. At the anode ('''A'''), chloride (Cl<sup>−</sup>) is oxidized to chlorine. The ion-selective membrane ('''B''') allows the counterion Na<sup>+</sup> to freely flow across, but prevents anions such as hydroxide (OH<sup>−</sup>) and chloride from diffusing across. At the cathode ('''C'''), water is reduced to hydroxide and hydrogen gas.]]