A cellwith two electrodes, one of grey tin and the other white tin, bo – InterviewSolution

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1.	A cellwith two electrodes, one of grey tin and the other white tin, both dipping in solution of (NH_4)_2 SNCI_6 showed zero emf at 18^@C. What conclusion may be draw from this "
Answer» The emf DEVELOPED at the electrode -SOLUTION PHASE boundary cancels the normal emf Grey tin being non-medallic ceases ti orivude a reversible electrode reaction Electrode surface develops a ortective layer and the cell develops a very large internal resistance The free energy CHANGO of the cell becomes zero Answer :D

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