Verified Solution • 2025–26 Session
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QJEEAdv15Chfc1b: JEE Advanced 2015 Chemistry - Class 12 JEEAdv15Chfc1b Solution: Copper is purified by electrolytic refining of blister copper.…
Copper is purified by electrolytic refining of blister copper. The correct statement(s) about this process is(are)
Multiple Choice Options
- A Impure Cu strip is used as cathode
- B Acidified aqueous CuSO4 is used as electrolyte
- C Pure Cu deposits at cathode
- D Impurities settle as anode – mud
Step-by-Step Verified Solution
(a) is wrong statement. Impure copper is set as anode where copper is oxidized to Cu2+ and goes into electrolytic solutions.
(b) CuSO4 is used as an electrolyte in purification process.
(c) Pure copper is deposited at cathode as : Cu2+ + 2e Cu : (At cathode)
(d) Less active metals like Ag, Au etc. settle down as anode mud.