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6. (2pss). For the Galvanic cell, Ag(s)Ag+(0.015M)Fe3+(0.055M),Fe2+(0.045M)Pt(s) (a) Write the half-reactions and the overall cell reaction. (b) What is Esell initially? As the cell operates, will Esell increase, decrease, or remain constant with time? Explain. (c) What will be Ecell when [Ag+]has increased to 0.020M ? (d) What are the ion concentrations when Ecel=0 ? Given that EAg+/Ag=0.80V and EFe3+t/Fe2t=0.77V