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Problem 4. Using the emf series, calculate the cell potential and estimate the type of the cell reaction (spontaneous or non-spontaneous). Ag | Ag (1.0M) || Cu" (1.0M) Cu Note: as per the convention (the left side specie) Ag will be considered anode and Cu (on right) will be considered as a cathode. Problem 7. Using the Nernst equation, find the potential of O2 electrode in a solution at pH = 10. O2 + 2H:0+ 4e - 2H30