A voltaic cell is made by placing a zinc electrode in a compartment in which the Zn2+ concentration is 2.0 × 10–5M and by placing a Pt electrode in the other compartment, in which the H+ concentration is 3.4M andPH2 = 1.00 atm. The Zn2+/Zn half-cell reduction potential is –0.76 V, and the H+/H2 half-cell reduction potential is 0.00 V. What is the equilibrium constant at 25°C for the spontaneous cell reaction?
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