Carboxylic Acid and Acid DerivativesHard
Question
Copper is purified by electrolytic refining of blister copper. The correct statement(s) about this process is (are)
Options
A.Impure Cu strip is used as cathode
B.Acidified aqueuous CuSO4 is used as electrolyte
C.Pure Cu deposits at cathode
D.Impurities settle as anode-mud
Solution
(A) Impure Cu strip is used as cathode : INCORRECT
Impure Cu strip is used as anode
(B) Aq.solution of (CuSO4 + H2SO4) is used as electrolyte : CORRECT
(C) Pure Cu deposites at cathode : CORRECT
Cu+2
Cu
At cathode
(D) Impurities settle as anode mud : CORRECT
In electrorefining impurities are either soluble in electrolyte solution or deposit below anode known as anode mud.
Impure Cu strip is used as anode
(B) Aq.solution of (CuSO4 + H2SO4) is used as electrolyte : CORRECT
(C) Pure Cu deposites at cathode : CORRECT
Cu+2
CuAt cathode
(D) Impurities settle as anode mud : CORRECT
In electrorefining impurities are either soluble in electrolyte solution or deposit below anode known as anode mud.
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