See the figure https://www.fuelcellstore.com/introduction-ion-exchange-membranes-salt-splitting https://www.fuelcellstore.com/introduction-ion-exchange-memb...

See the figure https://www.fuelcellstore.com/introduction-ion-exchange-membranes-salt-splitting https://www.fuelcellstore.com/introduction-ion-exchange-memb... Each ion of salt participates in a different reaction