Electrochemistry Notes for JEE Main & Advanced 2026 | Complete Formula Sheet PDF
Electrochemistry – Complete Revision Notes for JEE
Electrochemistry is one of the most important chapters in JEE Main, JEE Advanced, NEET and Boards. Every year 1–3 questions are asked from this chapter. This chapter covers Galvanic Cell, Electrolytic Cell, Nernst Equation, Conductance, Faraday's Laws of Electrolysis and Cell Potential.
If you revise this formula sheet properly, you can solve most numerical questions quickly.
What is Electrochemistry?
Electrochemistry is the branch of chemistry that studies the conversion of chemical energy into electrical energy and electrical energy into chemical energy.
Important Electrochemistry Formulas
1. Cell Potential
E°cell = E°cathode − E°anode
E°cell > 0 → Spontaneous Reaction
E°cell < 0 → Non-Spontaneous Reaction
E°cell = 0 → Equilibrium
2. Nernst Equation
Ecell = E°cell − (0.0591/n) logQ
Where:
Ecell = Cell Potential
E°cell = Standard Cell Potential
n = Number of electrons transferred
Q = Reaction Quotient
3. Conductance
G = 1/R
Where
G = Conductance
R = Resistance
4. Specific Conductance
κ = l / (R × A)
Where
κ = Specific Conductance
l = Distance between electrodes
A = Area of cross-section
5. Molar Conductivity
Λm = (κ × 1000)/C
Where
C = Concentration (mol/L)
6. Faraday's First Law
Mass deposited
m ∝ Q
or
m = ZQ
7. Faraday's Second Law
For same electricity,
m₁/m₂ = E₁/E₂
Galvanic Cell
Example
Zn | Zn²⁺ || Cu²⁺ | Cu
Electron Flow
Anode → Cathode
Remember
AnOx – RedCat
Anode → Oxidation
Cathode → Reduction
Applications of Electrochemistry
Electroplating
Electrorefining
Electrowinning
Corrosion Protection
Batteries
Fuel Cells
JEE Important Tips
✅ Learn Nernst Equation
✅ Practice Cell Potential Numericals
✅ Remember Anode & Cathode
✅ Revise Conductance Formulas
✅ Practice Previous Year Questions
Conclusion
Electrochemistry is a high-scoring chapter for JEE Main and Advanced. Revise these formulas daily and solve PYQs to master the chapter.
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