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General Principles and processes of Isolation of Elements
easy
When aqueous solution of cupric bromide is electrolyzed, the product obtained at cathode will be
A
$H_2$
B
$Cu$
C
$Br_2$
D
$O_2$
Solution
The discharge potential of $\mathrm{Cu}^{2+}$ ion is lower than the discharge potential of $\mathrm{H}_{3} \mathrm{O}^{+}$
Hence, during electrolysis of aqueous cupric bromide solution, copper is deposited at cathode.
Standard 12
Chemistry
