How would I write the two redox half-reactions for these:
Ag/Ag+| | H+/H2
Cu/Cu2+| | H+/H2
H2/H+| | Zn2+/Zn
Cu/Cu2+| | Zn2+/Zn
Ag/Ag+| | Zn2+/Zn
Would I just write it like this for the first one:
Ag -> ag+ + 1e
H+ + 1e -> H2
and then how would I calculate the Ecell for each one if I am given +0.80 volts on the volt meter for the first one?