Class 12 Electrochemistry One Shot ⚡Sikhar Sir | Board Exam 2026

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Master the most important chapter of Class 12 Chemistry: Electrochemistry! Sikhar Sir provides a complete One Shot revision for the 2026 Board Exams, covering all high-weightage topics in just 20 minutes.
In this video, we dive into the differences between Galvanic and Electrolytic cells, the mechanics of the Daniel Cell , and the essential Nernst Equation. Sikhar Sir also provides "Flash Cards" for quick memorization of formulas like Gibbs Free Energy and Kohlrausch's Law.

Key Topics Covered:

Cell Types: Galvanic vs. Electrolytic cell differences [01:54].
Standard Hydrogen Electrode (SHE): The reference electrode [04:14].
Nernst Equation: Calculation of cell potential and equilibrium constants [06:44].
Conductance: Molar conductivity and variation with dilution [07:50].
Kohlrausch's Law: Calculating conductivity for weak electrolytes [09:20].
Faraday’s Laws of Electrolysis: Mass and charge calculations [10:32].
Batteries & Fuel Cells: Primary vs. Secondary batteries (Lead Storage & H2-O2 Fuel Cell) [12:43].

00:00:00 - Introduction & Weightage (9 Marks!)
00:01:08 - Galvanic vs Electrolytic Cells
00:02:37 - Daniel Cell & Salt Bridge Functions
00:04:52 - Standard Electrode Potential Formula
00:05:24 - Cell EMF and Spontaneity (Gibbs Energy)
00:06:44 - Nernst Equation Simplified
00:07:50 - Conductance & Molar Conductivity
00:09:20 - Kohlrausch's Law
00:10:32 - Faraday's Laws of Electrolysis
00:12:43 - Types of Batteries (Dry Cell, Mercury, Lead Storage)
00:15:06 - Fuel Cells (H2-O2 Cell)
00:16:08 - Corrosion: Rusting of Iron
00:17:16 - Important Formula Summary

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