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In polarographic cell when potential is applied, oxygen is reduced at __________ when KCl is present.(a) Anode(b) Cathode(c) Electrolyte(d) Both the electrodeI got this question in my homework.I need to ask this question from Electrochemical Methods for Oxygen Analysis topic in portion Industrial Gas Analysers of Analytical Instrumentation

Answer»

Correct choice is (B) Cathode

Explanation: In polarographic cell when potential is applied, OXYGEN is REDUCED at the cathode. Reduction reactions TAKE place at the cathode. KCl is the electrolyte.



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