Q.
Aqueous solution of CuCl2 is subjected to electrolysis using Pt electrodes. Then the correct statement is
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a
pH progressively increases
b
pHprogressively decreases
c
pHremains unaffected
d
Cannot be predicted
answer is A.
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Detailed Solution
AqCuCl2 is a salt of SA−WB. It's pH < 7On electrolysis At Cathode Discharge potential of Cu+2 is less than H2O∴ Cu+2 +2e− → Cu At Anode Discharge potential of Cl− is less than H2O2Cl− → Cl2+2e−∴ The left over solution will be H2O with pH = 7pH<7 changes to PH = 7pH progressively increases
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