The charge over the anode in a galvanic cell is

Standard free energies of formation (in $kJ/mol$) at $298 \ K$ are $-237.2$,$-394.4$,and $-8.2$ for $H_2O_{(l)}$,$CO_{2_{(g)}}$,and pentane$_{(g)}$ respectively. The value of $E^o_{cell}$ for the pentane-oxygen fuel cell is .......... $V$.

For a spontaneous process,what are the values of $\Delta G$,equilibrium constant $(K)$,and $E^o_{cell}$?

Which of the following is an incorrect statement?

Consider the galvanic cell: $A_{(s)} | A_{(aq)}^{+2} || B_{(aq)}^{+} | B_{(s)}$. If the $EMF$ of the cell is positive,identify the correct cell reaction from the following.

Upon dipping a copper rod into an aqueous solution of the salt,the solution that turns blue is