Question

. The reaction Pb(s) + 2HCl(aq)  H2(g) + PbCl2(s) occurs in a beaker and is found to be exothermic.

Calculate Eo

(So im assuming that CL does not change so i discluded it now im stuck with a reaction with a negative E which im pretty sure is wrong)
If you had shown your work I could find the error. You're right, the Cl doesn't change oxidation state; however, it enters the reaction (formation PbCl2) so it should be included in the equation.And I assume you meant to say USE Eo to calculate Ereaction.

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