AIPMT MAINS 2008 Chemistry Nernst Equation MCQ Question
Standard free energies of formation (in kJ/mol) at 298 K ar.2, -394.4 an.2 for H₂O (l), CO₂ (g) and pentane (g) respectively. The value of E°cell for the pentane-oxygen fuel cell is
0.0968 V
1.968 V
Correct Answer
Detailed Explanation
Using the standard free energies of formation, the overall reaction free energy change can be calculated, which is then used to find E°cell using the relation ΔG° = -nFE°cell.
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