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NTA Abhyas NEET2020ChemistryElectrochemistryPractice

Two platinum electrodes were immersed in a solution of cupric sulphate and electric current passed through the solution. After sometime it was found that the colour of copper sulphate disappeared with evolution of gas at the electrode. The colourless solution contains

Options

  1. Aplatinum sulphate
  2. Bcopper hydroxide
  3. Ccopper sulphate
  4. Dsulphuric acid

Correct answer

D. sulphuric acid

Step-by-step solution

Anode:- 2 H 2 O → O 2 + 4 H + + 4 e − Cathode:- Cu + 2 aq + 2 e − → Cu s Solution will left with SO 4 − 2 &   H + ions So, we can say it is aq solutions of H 2 SO 4

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