CBSE · Class 12 · Chemistry · ElectrochemistryThe Nernst equation for a general electrochemical reaction $aA + bB \rightarrow cC + dD$ is given by:
Step-by-Step Solution
The correct option is $E = E^0 - \frac{RT}{nF} \ln \frac{[C]^c[D]^d}{[A]^a[B]^b}$. The Nernst equation relates the cell potential to the standard cell potential, temperature, gas constant, Faraday constant, and the concentrations of reactants and products.
Detailed Options Breakdown
Option : $E = E^0 + \frac{RT}{nF} \ln \frac{[C]^c[D]^d}{[A]^a[B]^b}$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Electrochemistry.
Option 1: $E = E^0 - \frac{RT}{nF} \ln \frac{[C]^c[D]^d}{[A]^a[B]^b}$ (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: $E = E^0 - \frac{nF}{RT} \ln \frac{[A]^a[B]^b}{[C]^c[D]^d}$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Electrochemistry.
Option 3: $E = \frac{RT}{nF} \ln \frac{[C]^c[D]^d}{[A]^a[B]^b} - E^0$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Electrochemistry.
💡 Study Guide: This question tests core syllabus concepts from Electrochemistry. For formulas, key summaries, and mock exam reference guides, read the full Electrochemistry Revision Notes.