- The standard cell potential (E°) of an electrochemical cell is related to the equilibrium constant (K) of the cell reaction by the equation: E° = (RT/nF) ln(K), or E° = (2.303RT/nF) log₁₀(K). - At 298 K (25°C), the term (2.303RT/F) is approximately 0.0592 V. - The number of electrons transferred (n) in the balanced reaction needs to be determined.
For the Daniel cell E° = 1.10 V. The value of equilibrium constant (K) for the reaction Zn(s) + Cu2+ (aq) → Zn2+ (aq) + Cu(s)
Asked in TNPSC CS Prelims 2015 · Topic: Physical and Chemical Changes, Solution (Methods of Expressing Concentration of Solutions (Mass Percentage, Volume Percentage, Molarity, Molality, Parts Per Million))
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