Mercuric oxide dry-cell batteries are often used where a flat discharge voltage and long life are required, such as in watches and cameras. The two half-cell reactions that occur in the battery are HgO1s2 + H2O1l2 + 2 e- ¡ Hg1l2 + 2 OH-1aq2 Zn1s2 + 2 OH-1aq2 ¡ ZnO1s2 + H2O1l2 + 2 e- The value of E° red for the cathode reaction is +0.098 V. The overall cell potential is +1.35 V. Assuming that both half-cells operate under standard conditions, what is the standard reduction potential for the anode reaction?

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