A cell is measured at two compositions at 298 K. The…

ChemistryHardHigh School (11–12)Electrochemistry › Galvanic Cells, Electrode Potential and the Nernst Equation A-Level AP IB

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A cell is measured at two compositions at $298\ \text{K}$ . The emf is $0.718\ \text{V}$ when $Q = 100$ and $0.688\ \text{V}$ when $Q = 1000$ . How many electrons does the cell reaction transfer?

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← Isha writes Q = ([Cu²⁺])/([Co²⁺]) for the reaction Co(s) + Cu²⁺(aq) → Co²⁺(aq) + Cu(s). What is wrong?The cell Co(s) mid Co²⁺(aq, 0.012 mol/L) ∥ Fe³⁺(aq, 0.60 mol/L), Fe²⁺(aq, 0.030 mol/L) mid Pt(s) has E° = 1.05 V at 298 K. What is its emf? →

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