Calculate the cell potential for the following reaction as written at 75 °C, given that [Zn2 ] = 0.870 M and [Ni2 ] = 0.0130 M. The standard cell potential for the half reaction of Zn is 0.76 written as Zn (s) --> Zn2+ + 2e- and the standard cell potential for the half reaction of Ni2+ is -0.26 written as Ni2+ + 2e- -->Ni (s). The overall equation for the reaction is Zn (s) + Ni2+ (aq) <----> Zn2+ (aq) + Ni (s)