MCQEasy1 mark
1
Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)
With respect to the electrolysis of copper (II) sulphate solution using copper electrodes, which statement is correct?
Topic: Electrolysis, electrolytes and electrode processes
Previous-year question practice database
Try it
Pick an option and check your answer. The full worked answer is below either way.
Answer
Exam answer
(a) Copper metal is deposited at the negative electrode.
Explanation
At the cathode: Cu²⁺ + 2e⁻ → Cu.
In words
Copper metal is deposited at the negative electrode.
More from Electrolysis
Assertion (A): Dilute Sulphuric acid is a stronger electrolyte than concentrated Sulphuric acid.
Reason (R): Dilute Sulphuric acid has a higher concentration of mobile ions.2026Assertion (A): In the electrolysis of acidified water, the volume of hydrogen liberated is twice the volume of oxygen formed.
Reason (R): Water has hydrogen and oxygen in the ratio of 1:2 by volume.2026In the electrolysis of molten aluminium oxide for extraction of aluminium, the following reactions take place:
Al³⁺ + 3e⁻ → Al
2O²⁻ → O₂ + 4e⁻
C + O₂ → CO₂
Al₂O₃ ⇌ 2Al³⁺ + 3O²⁻
The reaction that takes place at the negative electrode is:2026The reaction that takes place at the anode during the electrolysis of molten lead bromide is ............... . [2Br - 2e– ⟶ 2Br– / 2Br– - 2e– ⟶ Br₂]2026Electrolyte and Metallic conductor (the particles conducting electricity)2026Write an equation for the reaction that occurs at the cathode.2026