The Chlor-Alkali Industry

Chlorine is commercially produced by the electrolysis of

• Agar

• Brine

• Rock Salt

• Chloric acid

Which electrolytic cell is NOT used in the chlor-alkali industry?

• Diaphram Cell

• Membrane Cell

• Mercury Cell

• Galvanic cell

In the diaphram cell, the anode is made of which material?

• Chromium

• Titanium

• Steel

• Mercury

Pick all applicable answers for this question.

Ions present in the electrolyte include

• Cl^-

• OH^-

• H⁺

• K⁺

In the diaphram cell, the diaphram serves the purpose of

• Separating the cathode from the anode

• Preventing the products formed from mixing

• Regulating the movement of electrolyte in the cell

• Filter out undesired ions

Why is the level of electrolyte in the anode compartment kept higher than that in the cathode compartment?

• This is done to ensure that the rate of production of chlorine gas is maximal

• This is done to minimize the concentration of sodium ions in the cathode chamber

• This is done to ensure that the flow of electrolyte will always be from the anode compartment to the cathode compartment

• This is done to keep the gases formed during electrolysis separate

The gaseous product from the cathode is

• Chlorine

• Hydrogen

• Oxygen

• Fluorine

The solution formed in the cathode chamber consists of which dissolved solute(s)?

• NaCl

• NaOH

• NaCl and NaOH

• NaCl and NaClO

Which ionic equation BEST represent the formation of the main product at the anode?

• 2Cl^- → Cl₂ - 2e

• 2Cl^- - 2e → Cl₂

• 2Cl^- + 2e → Cl₂

• 4OH^- -4e → 2H₂O + O₂

Tick all options which are applicable

Which of the following would occur if the diaphram cell lacked a diaphram?

• A solution of sodium hypochlorite would be produced

• Sodium metal would be produced

• Hydrogen chloride would be produced in an explosive manner

• Hydrogen peroxide would be formed at the anode