Question:

The standard electrode potential for Daniell cell is 1.1 V. The standard Gibbs free energy for the reaction Zn(s) + Cu$^{2+}$(aq) → Zn$^{2+}$(aq) + Cu(s) is approximately:

Updated On: Nov 2, 2024
  • -212.27 J/mol
  • -21.22 J/mol
  • -212271.4 J/mol
  • -2.1227 J/mol
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The Correct Option is A

Solution and Explanation

Using the formula for Gibbs free energy change, \(\Delta G^{\circ} = -n \times F \times E^{\circ} \\ = -2 \times 96485 \text{ C/mol} \times 1.1 \text{ V} \\ = -212271 \text{ J/mol} \\ \approx -212.27 \text{ kJ/mol}\)$\\$The calculation gives -212.27 J/mol as the result.
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