When the calomel electrode acts as the cathode which of the following does not occur?(a) Mercury ions are discharged at the electrode(b) More calomel passes into the solution(c) There is a decrease in the concentration of chloride ions(d) There is an increase in the concentration of chloride ionsI have been asked this question by my school teacher while I was bunking the class.My question is taken from Secondary Reference Electrodes topic in section pH Meters and Ion Analysers of Analytical Instrumentation

When the calomel electrode acts as the cathode which of the following

1.	When the calomel electrode acts as the cathode which of the following does not occur?(a) Mercury ions are discharged at the electrode(b) More calomel passes into the solution(c) There is a decrease in the concentration of chloride ions(d) There is an increase in the concentration of chloride ionsI have been asked this question by my school teacher while I was bunking the class.My question is taken from Secondary Reference Electrodes topic in section pH Meters and Ion Analysers of Analytical Instrumentation
Answer» The CORRECT ANSWER is (d) There is an increase in the concentration of chloride ions Explanation: When the calomel electrode acts as the CATHODE. When the calomel electrode acts as the cathode, mercury ions are discharged at the electrode. More calomel passes into the SOLUTION. HENCE, there is an increase in the concentration of chloride ions.

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