Electrochemistry
Madhya Pradesh Board · Class 12 · Chemistry
Quick revision notes for Electrochemistry — Madhya Pradesh Board Class 12 Chemistry. Key concepts, formulas, and definitions for last-minute revision.
Key Topics to Revise
Electrochemical Cells
- Electrochemical cells convert chemical energy to electrical energy (galvanic) or vice versa (electrolytic)
- Daniell cell: Zn(s) + Cu²⁺(aq) → Zn²⁺(aq) + Cu(s) produces 1.1V
- Anode: electrode where oxidation occurs (negative in galvanic cells)
Nernst Equation
- Relates cell potential to concentration of reactants and products
- Temperature dependence of cell potential
- For non-standard conditions, cell potential differs from standard potential
Gibbs Energy and Equilibrium Constant
- Spontaneous reactions have negative ΔG and positive E°cell
- Relationship between thermodynamics and electrochemistry
- Equilibrium constant can be calculated from standard cell potential
Conductance of Electrolytic Solutions
- Resistance (R) in ohms (Ω), Conductance (G) = 1/R in siemens (S)
- Resistivity (ρ) and conductivity (κ) are material properties
- Molar conductivity (Λm) accounts for concentration effects
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What are the important topics in Electrochemistry for Madhya Pradesh Board Class 12 Chemistry?
Electrochemistry covers several key topics that are frequently asked in Madhya Pradesh Board Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
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