Chemistry - Metallurgy Question with Solution | TestHub

ChemistryMetallurgyEllingham diagram & Reduction methods, Refining of metalMedium2 minQB
ChemistryMediumsingle choice

When aqueous solution of cupric bromide is electrolyzed the product obtained at cathode and at anode will be respectively :

Options:

Answer:
D
Solution:

 

In the electrolysis of aqueous CuBr₂, Cu²⁺ ions are reduced at the cathode to form Cu metal, as Cu²⁺ has a higher reduction potential than H₂O. At the anode, Br⁻ ions are oxidized to Br₂, as Br⁻ has a lower oxidation potential than H₂O.

 

Cathode (reduction):

Anode (oxidation):

 

Therefore, the products are Cu at the cathode and Br₂ at the anode.

Stream:JEESubject:ChemistryTopic:MetallurgySubtopic:Ellingham diagram & Reduction methods, Refining of metal
⏱ 2mℹ️ Source: QB

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