A cell with two electrodes one of grey tin and the other of

Last updated: 6/30/2023

A cell with two electrodes one of grey tin and the other of white tin both dipping in solution of NH SnCl showed zero e m f at 18 C What conclusion may be drawn from this 6 ROMOTIO a The e m f developed at the electrode solution phase boundary cancels the normal e m f els bisboate b Grey tin being non metallic ceases to provide a reversible electrode reaction c Electrode surface develops a protective layer and the cell develops a very large internal resistance C d The free energy change of the cell becomes zero