A. Water
B. HCI
C. Na+
D. NaCl
¨ A diaphragm cell is an electrolytic cell that is used to produce chlorine and sodium hydroxide (NaOH) from a solution of sodium chloride (NaCl). The cell consists of an anode and a cathode separated by a diaphragm, which allows the ions to pass through while preventing the mixing of the anolyte and catholyte.
¨ During the electrolysis of NaCl solution in the diaphragm cell, chlorine gas is produced at the anode by the oxidation of chloride ions (Cl-) to chlorine gas (Cl2). At the cathode, sodium ions (Na+) are reduced to form sodium metal (Na) and hydrogen gas (H2) by the reduction of water molecules (H2O) or hydroxide ions (OH-) present in the catholyte:
¨ 2H2O + 2e- → H2 + 2OH- or
¨ 2OH- → H2O + 1/2O2 + 2e-
¨ The hydrogen gas produced at the cathode is collected and used as a feedstock for various industrial processes, such as the production of ammonia, methanol, and hydrogen peroxide
Submitted by :- Jamil Ahmed