Essential Chemistry for IGCSE - Electricity And Chemistry (Section 3 - No. 18)

What is the function of a diaphragm in the electrolysis of brine in the chlor-alkali process?

To prevent the mixing of chlorine and hydrogen

To keep the chlorine separate from the sodium hydroxide solution

To allow the passage of Na+ ions.

All of the above

The diaphragm ensures the separation of the products.