<Tr> <Td> </Td> <Td> This section needs expansion . You can help by adding to it . (March 2016) </Td> </Tr> <P> Chloride is an essential electrolyte, trafficking in and out of cells through chloride channels and playing a key role in maintaining cell homeostasis and transmitting action potentials in neurons . Characteristic concentrations of chloride in model organisms are: in both E. coli and budding yeast are 10 - 200mM (media dependent), in mammalian cell 5 - 100mM and in blood plasma 100mM . </P> <P> Chloride can be oxidized but not reduced . The first oxidation, as employed in the chlor - alkali process, is conversion to chlorine gas . Chlorine can be further oxidized to other oxides and oxyanions including hypochlorite (ClO, the active ingredient in chlorine bleach), chlorine dioxide (ClO), chlorate (ClO − 3), and perchlorate (ClO − </P> <P> In terms of its acid - base properties, chloride is a very weak base as indicated by the negative value of the pKa of hydrochloric acid . Chloride can be protonated by strong acids, such as sulfuric acid: </P>

Why do all metal ion solutions end with chloride