On electrolysis of copper sulphate solution, the mass of the electrode connected to the negative terminal ___, while that of the electrode connected to the positive terminal ___.
A
increases, decreases
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B
increases, increases
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C
decreases, increases
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D
decreases, decreases
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Solution
The correct option is A increases, decreases On electrolysis of copper sulphate solution, copper atoms from the electrode connected to the positive terminal lose electrons and enter the solution. Hence, the mass of the electrode connected to the negative terminal decreases. On the other hand, copper ions present in the solution accept electrons and get deposited on the electrode connected to the negative terminal. Hence, on electrolysis the mass of the electrode connected to the negative terminal increases.