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What is the corrosion potential of a galvanic couple composed of a Zn metal and a Cu metal in a 1 M Cu2+ solution at 298 K when the Zn electrode is at -0.76 V and the Cu electrode is at +0.34 V?

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To calculate the corrosion potential of a galvanic couple, we need to determine the difference in potential between the two electrodes. In this case, we have a Zn electrode at -0.76 V and a Cu electrode at +0.34 V.The corrosion potential  E_corr  can be calculated using the following formula:E_corr = E_Cu - E_Znwhere E_Cu is the potential of the Cu electrode and E_Zn is the potential of the Zn electrode.Plugging in the given values:E_corr =  +0.34 V  -  -0.76 V  = 0.34 V + 0.76 V = 1.1 VThe corrosion potential of the galvanic couple composed of a Zn metal and a Cu metal in a 1 M Cu2+ solution at 298 K is 1.1 V.

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