During the electrolysis of brine solution, which gas is liberated at?
a. anode
b. cathode.
Write the equation for the reaction taking place.
The overall reaction of the brine electrolysis is:
2NaCl + 2H2O ------------> 2NaOH + H2 + Cl2
At cathode:
2H+ + 2e- ------> H2
At Anode:
2Cl- - 2e- ------> Cl2