One shot revision of electrochemistry|class 12th chemistry|chemistry by ashutosh sir
Автор: PHYCHEM ACADEMY
Загружено: 2026-01-07
Просмотров: 66
Описание:
😊 Electrochemistry One Shot Revision 🔋
1. Electrochemical Cell 🧂
Converts chemical energy → electrical energy
Types: Galvanic (voltaic) and electrolytic cells
2. Galvanic Cell ⚡
Anode (oxidation, -ve) | Cathode (reduction, +ve)
Example: Daniel cell (Zn-Cu)
3. Electrode Potential 🔌
Standard Electrode Potential (E°): potential at 1M, 1 atm, 25°C
Nernst equation: E = E° - (RT/nF) ln Q
4. EMF of Cell 📈
E°(cell) = E°(cathode) - E°(anode)
Positive E°(cell) → spontaneous reaction
5. Conductance 💡
Conductivity (κ) = 1/resistivity
Molar conductivity (Λm) = κ × 1000/M
6. Electrolysis 🔋
Cathode: reduction; Anode: oxidation
Faraday's laws: m = ZIt (Z = M/nF)
7. Batteries 🌓
Primary (non-rechargeable): Zn-C, Leclanche
Secondary (rechargeable): lead-acid, Li-ion
8. Corrosion 🛠️
Rusting of iron: anodic oxidation, cathodic reduct
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