calculate the delta G rxn
O2(g)+2 H2o(l)+2 Cu(s)--> 4 OH-(aq)+2 Cu^2+(aq)
I assume you mean dGorxn. Do you have tables.
dGorxn = (n*dGoproducts) - (n*dGoreactants)
O2(g)+2 H2o(l)+2 Cu(s)--> 4 OH-(aq)+2 Cu^2+(aq)
dGorxn = (n*dGoproducts) - (n*dGoreactants)