Chemistry
During electroplating of an article with nickel —
(i) Name — (a) The electrolyte (b) The cathode (c) The anode
(ii) Give the reaction of the electrolysis at (a) The cathode (b) The anode
Electrolysis
91 Likes
Answer
(i) (a) The electrolyte — Aq. soln. of nickel sulphate (b) The cathode — Cleaned article to be electroplated (c) The anode — Plate or block of nickel metal
(ii) the reaction of the electrolysis at:
(a) At Cathode: Ni2+ + 2e– ⟶ Ni
(b) At Anode : Ni – 2e– ⟶ Ni2+
Answered By
55 Likes
Related Questions
Aqueous solution of nickel sulphate contains Ni2+ and SO42- ions
(i) Which ion moves towards the cathode?
(ii) What is the product at the anode?
Select the correct answer — A compound which during electrolysis in it's molten state liberates a reddish brown gas at the anode :
- Sodium chloride
- Copper (II) oxide
- Copper (II) sulphate
- Lead (II) bromide
A, B and C are three electrolytic cells, connected in different circuits. Cell 'A' contains NaCl soln., and the bulb in the circuit glows brightly, when the circuit is completed. Cell 'B' contains acetic acid and the bulb glows dimly. Cell 'C' contains sugar soln., and the bulb does not glow. Give reasons for each observation.
Give reasons – The electrolysis of acidulated water is considered to be an example of catalysis.