Select the correct answer from the list in brackets:
(i) An aqueous electrolyte consists of the ions mentioned in the list. The ion which could be discharged most readily during electrolysis. [Fe2+, Cu2+, H+].
(ii) The metallic electrode which does not take part in an electrolytic reaction. [Cu, Ag, Pt, Ni].
(iii) The ion which is discharged at the anode during the electrolysis of copper sulphate solution using copper electrodes as anode and cathode. [Cu2+, OH1-, SO42-, H+].
(iv) When dilute sodium chloride is electrolysed using graphite electrodes, the cation which is discharged at the cathode most readily. [Na1+, OH1-, H1+, Cl1-].
(v) During silver plating of an article using potassium argentocyanide as an electrolyte, the anode material should be [Cu, Ag, Pt, Fe].

Question

Select the correct answer from the list in brackets:

(i) An aqueous electrolyte consists of the ions mentioned in the list. The ion which could be discharged most readily during electrolysis.

Flash Institute · Accepted Answer

(i) An aqueous electrolyte consists of the ions mentioned in the list. The ion which could be discharged most readily during electrolysis. — Cu2+.
(ii) The metallic electrode which does not take part in an electrolytic reaction. — Pt.
(iii) The ion which is discharged at the anode during the electrolysis of copper sulphate solution using copper electrodes as anode and cathode. — Cu2+.
(iv) When dilute sodium chloride is electrolysed using graphite electrodes, the cation which is discharged at the cathode most readily. — H1+
(v) During silver plating of an article using potassium argentocyanide as an electrolyte, the anode material should be — Ag.

	Nature of Anode	Nature of Cathode	Ions present in electrolyte	Ion/s discharged at Cathode / Anode
1. Electroplating an iron rod with silver
2. Electroplating a copper sheet with nickel
3. Electrorefining of silver
4. Extraction of potassium from KCl
5. Extraction of aluminium from Al₂O₃

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