Question 42
Metals and their CompoundsWhich one of the following metals is not normally extracted by chemical reduction because of its position in the electrochemical series?
- A.Copper
- B.Iron
- C.Lead
- D.Potassium
- E.Zinc
Show the answer and explanation
Answer: D (Potassium)
Explanation
Potassium is very high in the electrochemical series, so carbon cannot reduce its compounds; it is extracted by electrolysis of the molten compound.