Question

Tarnished silver contains Ag2S.Can this tarnish be removed by placing the tarnish silver ware in an aluminium pan containing an inert electrolyte?(Given standard electrode ppotential for Ag2S= -0.71V AND Al3+=1.66v)

Answer 1

Hey !!

E°cell for reaction of tarnished silver ware with aluminium pan is

        (0.71 V) - (1.66 V) , +0.95 V

Tarnished silver ware, therefore, can be cleaned by placing it in an aluminium pan as E°cell is positive.

Hope it helps you !!