ICSE Class 10 Chemistry 2020 Solved Paper

An aqueous solution of nickel (II) sulphate was electrolyzed using nickel electrodes. Observe the diagram and answer the questions that follow :

Question : 84

Total: 86

What do you observe at the cathode and anode respectively?

Solution:

At Anode, nothing will be left as nickel atom will move away as nickel ions. At cathode, the nickel ions will form Ni atom and deposit there, thus volume of anode decreases and volume of cathode increases.

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