Question 15
ElectrolysisThe effluent of an industrial plant used in the electrolysis of concentrated brine, with a flowing mercury cathode may obtain impurities like
- A.oxygen
- B.hydrogen
- C.mercury (II) chloride
- D.hydrogen chloride.
Show the answer and explanation
Answer: C (mercury (II) chloride)
Explanation
In the mercury-cathode cell some mercury escapes and reacts with chlorine, so the waste water can contain poisonous mercury(II) chloride.