To calculate the standard electrode potential for the given reaction, we need to subtract the standard electrode potential of the oxidation half-reaction from the standard electrode potential of the reduction half-reaction.First, we need to identify the oxidation and reduction half-reactions. In this case, Zn is being oxidized losing electrons and Cu2+ is being reduced gaining electrons .Oxidation half-reaction: Zn s Zn2+ aq + 2e- reverse of the given Zn half-reaction Reduction half-reaction: Cu2+ aq + 2e- Cu s given Cu half-reaction Now, we need to find the standard electrode potential for the oxidation half-reaction. Since the given Zn half-reaction is the reverse of the oxidation half-reaction, we need to change the sign of its standard electrode potential:Etheta oxidation = - -0.76 V = 0.76 VNow, we can calculate the standard electrode potential for the overall reaction:Etheta reaction = Etheta reduction - Etheta oxidation Etheta reaction = 0.34 V - 0.76 VEtheta reaction = -0.42 VSo, the standard electrode potential for the given reaction is -0.42 V.