Nernst Equation
Chapter Name : Electrochemistry |
Sub Topic Code : 102_12_03_04_02 |
Topic Name : Nernst Equation |
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Sub Topic Name : Equilibrium Constant From Nernst Equation |
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Introduction
When there is no change in the concentration of Cu2+ and Zn2+ ions and, voltmeter gives zero reading. This indicates that equilibrium has been attained. Nernst equation gives a relationship between equilibrium constant of the reaction and standard potential of the cell in which that reaction takes place. Thus, equilibrium constants of the reaction, can be calculated from the corresponding E? value of the cell.
Pre-Requisites:
Electrochemical cell, Daniel cell, voltage, reduction, oxidation
Activity:
Observe the types of batteries used in different devices. E.g. car, clock, wrist watch
Real Life Question:
How does information flow in a neuron?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Reduction | Gain of electron is called reduction. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Battery | Take a battery and see how its negative and positive ends are made. Also take a look at the volts in different types of batteries. |
Real life uses :
Neuronal functioning
Places to visit :
Car, room
Practical examples around us
| Examples | Explainations |
|---|---|
| Neuron | Neuron is the nerve cell which is responsible for carrying sensory information to the brain and spinal cord. It’s necessary to generate electrical signals to carry information |
What you learn in Theory:
Nernst equation can be used to find out the total voltage for a full electrochemical cell.
What you learn in Practice:
Neuron use the same basic principle of converting chemical energy into electrical energy