a.) which of the following reactions should have the larger emf under standard conditions & why?

Question

CuSO4 (aq) + Pb (s) goes to PbSO4 (s) + Cu (s);
Cu(NO3)2 (aq) + Pb(s) goes to Pb(NO3)2(aq) + Cu(s)

b.) Calculate delta G for the reaction.

Answer 1

In #1, formation of Pb to Pb^+ should be smaller than Pb ==> PbSO4 because the formation of PbSO4 drives the reaction to the right.

#2. dG = -nFEocell