In Ammonia electrode, diffusion of dissolved ammonia occurs through the membrane until which of the following conditions occur?(a) Concentration becomes equal on both sides(b) Activity becomes equal on both sides(c) Partial pressure becomes equal on both sides(d) Differential pressure is lowThe question was posed to me in an internship interview.The query is from Ammonia and Fluoride Electrode topic in portion pH Meters and Ion Analysers of Analytical Instrumentation

In Ammonia electrode, diffusion of dissolved ammonia occurs through th

1.	In Ammonia electrode, diffusion of dissolved ammonia occurs through the membrane until which of the following conditions occur?(a) Concentration becomes equal on both sides(b) Activity becomes equal on both sides(c) Partial pressure becomes equal on both sides(d) Differential pressure is lowThe question was posed to me in an internship interview.The query is from Ammonia and Fluoride Electrode topic in portion pH Meters and Ion Analysers of Analytical Instrumentation
Answer» The correct choice is (c) PARTIAL PRESSURE becomes EQUAL on both sides For explanation I would say: In Ammonia ELECTRODE, diffusion of dissolved ammonia occurs through the membrane until partial pressure becomes equal on both sides. Partial pressure is PROPORTIONAL to its concentration.

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