1. Tardigrade
  2. Question
  3. Chemistry
  4. Assertion (A) At the end of electrolysis using platinum electrodes, an aqueous solution of CuSO 4 turns colourless. Reason (R) During the electrolysis CuSO 4 changes to Cu ( OH )2 during electrolysis.

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Q. Assertion (A) At the end of electrolysis using platinum electrodes, an aqueous solution of $CuSO _{4}$ turns colourless.
Reason (R) During the electrolysis $CuSO _{4}$ changes to $Cu ( OH )_{2}$ during electrolysis.

AIIMSAIIMS 2016

Solution:

$CuSO _{4}$ changes to $Cu$ at the cathode and blue colour of the solution gradually fades (colourless).