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A solution of copper(II) sulphate (VI) is electrolysed between copper electrodes by a currrent of 10.0 A for exactly 9650 s.Which remains unchanged?
- a)Molar concentration of solution
- b)Cathodic plate
- c)Anodic plate
- d)All of these
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A solution of copper(II) sulphate (VI) is electrolysed between copper ...
0.5 mole of copper is dissolved from the anode. Thus, its mass decreases. 0.5 mole of copper from the anode is deposited at the cathode. Thus, its mass increases.
Thus, molar concentration of aqueous solution of CuSO4 remains unchanged.
Most Upvoted Answer
A solution of copper(II) sulphate (VI) is electrolysed between copper ...
Introduction:
In electrolysis, a current is passed through an electrolyte solution, causing a chemical reaction to occur at the electrodes. In this case, a solution of copper(II) sulfate (CuSO4) is electrolyzed between copper electrodes.
Electrolysis of Copper(II) Sulfate:
During the electrolysis of copper(II) sulfate, copper ions (Cu2+) are reduced at the cathode (negative electrode) and copper is deposited on the cathode. At the same time, sulfate ions (SO4^2-) are oxidized at the anode (positive electrode) to form oxygen gas (O2) and water (H2O). The overall reaction can be represented as:
Cu2+(aq) + 2e- -> Cu(s) (reduction at the cathode)
2H2O(l) -> O2(g) + 4H+(aq) + 4e- (oxidation at the anode)
Effect of Electrolysis on Concentration:
During the electrolysis process, the concentration of copper(II) sulfate solution remains unchanged. This is because the copper ions that are reduced at the cathode are replenished by the copper sulfate solution. As copper ions are reduced, an equal number of copper ions from the solution migrate towards the cathode to maintain the concentration of the solution.
Explanation of Answer:
The molar concentration of the copper(II) sulfate solution remains unchanged during electrolysis. This is because the process of electrolysis does not involve the addition or removal of solute particles from the solution. The concentration of the solution is solely determined by the amount of solute dissolved in the solvent.
Conclusion:
In summary, the molar concentration of the copper(II) sulfate solution remains unchanged during the electrolysis process. This is because the copper ions that are reduced at the cathode are replenished by the solution, maintaining the concentration. The cathodic and anodic plates, on the other hand, undergo changes as copper is deposited on the cathode and oxidation occurs at the anode. Therefore, the correct answer is option 'A' - Molar concentration of the solution.
In electrolysis, a current is passed through an electrolyte solution, causing a chemical reaction to occur at the electrodes. In this case, a solution of copper(II) sulfate (CuSO4) is electrolyzed between copper electrodes.
Electrolysis of Copper(II) Sulfate:
During the electrolysis of copper(II) sulfate, copper ions (Cu2+) are reduced at the cathode (negative electrode) and copper is deposited on the cathode. At the same time, sulfate ions (SO4^2-) are oxidized at the anode (positive electrode) to form oxygen gas (O2) and water (H2O). The overall reaction can be represented as:
Cu2+(aq) + 2e- -> Cu(s) (reduction at the cathode)
2H2O(l) -> O2(g) + 4H+(aq) + 4e- (oxidation at the anode)
Effect of Electrolysis on Concentration:
During the electrolysis process, the concentration of copper(II) sulfate solution remains unchanged. This is because the copper ions that are reduced at the cathode are replenished by the copper sulfate solution. As copper ions are reduced, an equal number of copper ions from the solution migrate towards the cathode to maintain the concentration of the solution.
Explanation of Answer:
The molar concentration of the copper(II) sulfate solution remains unchanged during electrolysis. This is because the process of electrolysis does not involve the addition or removal of solute particles from the solution. The concentration of the solution is solely determined by the amount of solute dissolved in the solvent.
Conclusion:
In summary, the molar concentration of the copper(II) sulfate solution remains unchanged during the electrolysis process. This is because the copper ions that are reduced at the cathode are replenished by the solution, maintaining the concentration. The cathodic and anodic plates, on the other hand, undergo changes as copper is deposited on the cathode and oxidation occurs at the anode. Therefore, the correct answer is option 'A' - Molar concentration of the solution.
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A solution of copper(II) sulphate (VI) is electrolysed between copper electrodes by a currrent of 10.0 A for exactly 9650 s.Which remains unchanged?a)Molar concentration of solutionb)Cathodic platec)Anodic plated)All of theseCorrect answer is option 'A'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A solution of copper(II) sulphate (VI) is electrolysed between copper electrodes by a currrent of 10.0 A for exactly 9650 s.Which remains unchanged?a)Molar concentration of solutionb)Cathodic platec)Anodic plated)All of theseCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A solution of copper(II) sulphate (VI) is electrolysed between copper electrodes by a currrent of 10.0 A for exactly 9650 s.Which remains unchanged?a)Molar concentration of solutionb)Cathodic platec)Anodic plated)All of theseCorrect answer is option 'A'. Can you explain this answer?.
A solution of copper(II) sulphate (VI) is electrolysed between copper electrodes by a currrent of 10.0 A for exactly 9650 s.Which remains unchanged?a)Molar concentration of solutionb)Cathodic platec)Anodic plated)All of theseCorrect answer is option 'A'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A solution of copper(II) sulphate (VI) is electrolysed between copper electrodes by a currrent of 10.0 A for exactly 9650 s.Which remains unchanged?a)Molar concentration of solutionb)Cathodic platec)Anodic plated)All of theseCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A solution of copper(II) sulphate (VI) is electrolysed between copper electrodes by a currrent of 10.0 A for exactly 9650 s.Which remains unchanged?a)Molar concentration of solutionb)Cathodic platec)Anodic plated)All of theseCorrect answer is option 'A'. Can you explain this answer?.
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A solution of copper(II) sulphate (VI) is electrolysed between copper electrodes by a currrent of 10.0 A for exactly 9650 s.Which remains unchanged?a)Molar concentration of solutionb)Cathodic platec)Anodic plated)All of theseCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for A solution of copper(II) sulphate (VI) is electrolysed between copper electrodes by a currrent of 10.0 A for exactly 9650 s.Which remains unchanged?a)Molar concentration of solutionb)Cathodic platec)Anodic plated)All of theseCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of A solution of copper(II) sulphate (VI) is electrolysed between copper electrodes by a currrent of 10.0 A for exactly 9650 s.Which remains unchanged?a)Molar concentration of solutionb)Cathodic platec)Anodic plated)All of theseCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
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