In a galvanic cell during spontaneous discharge, which electrode is the site of oxidation and the negative terminal relative to the cathode?

Explanation

Oxidation occurs at the anode, and reduction occurs at the cathode. During spontaneous discharge of a galvanic cell, electrons supplied by the anode flow through the external circuit toward the cathode, making the anode the negative terminal. The anode need not have a negative standard reduction potential relative to every possible reference electrode.