State and explain Nernst equation with the help of a metallic electrode and a non-metallic electrode. Describe the salient features of the collision theory of reaction rates of bim... State and explain Nernst equation with the help of a metallic electrode and a non-metallic electrode. Describe the salient features of the collision theory of reaction rates of bimolecular reactions.
Understand the Problem
The question is asking to state and explain the Nernst equation, specifically with applications related to non-metallic electrodes, as well as to describe the features of collision theory concerning reaction rates of bimolecular reactions.
Answer
Nernst equation calculates electrode potential. Collision theory explains reaction rates by molecular collisions needing proper energy and orientation.
The Nernst equation determines the electrode potential (E) under non-standard conditions:
E = E° - (RT/nF) * lnQ
where E° is the standard electrode potential, R is the gas constant, T is temperature, n is the number of moles of electrons, F is Faraday's constant, and Q is the reaction quotient.
For metallic electrodes, the equation helps calculate potentials based on concentrations; for non-metallic electrodes, it aids in using the concentration of ions (C).
Collision theory states that reactions occur when reactant molecules collide with sufficient energy and proper orientation. It emphasizes activation energy (Ea), the energy required to initiate a reaction, and distinguishes between effective and ineffective collisions.
Answer for screen readers
The Nernst equation determines the electrode potential (E) under non-standard conditions:
E = E° - (RT/nF) * lnQ
where E° is the standard electrode potential, R is the gas constant, T is temperature, n is the number of moles of electrons, F is Faraday's constant, and Q is the reaction quotient.
For metallic electrodes, the equation helps calculate potentials based on concentrations; for non-metallic electrodes, it aids in using the concentration of ions (C).
Collision theory states that reactions occur when reactant molecules collide with sufficient energy and proper orientation. It emphasizes activation energy (Ea), the energy required to initiate a reaction, and distinguishes between effective and ineffective collisions.
More Information
The Nernst equation is crucial in electrochemistry for predicting the cell potential in various conditions. Collision theory is foundational for understanding the energetic requirements for reactions.
Tips
A common mistake is failing to account for temperature changes in the Nernst equation. Ensure correct units and values for all constants.
Sources
- Nernst Equation - Chemistry LibreTexts - chem.libretexts.org
- Describe the salient features of the collision theory of reaction rates. - toppr.com
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