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Electrochemistry

CBSE · Class 12 · Chemistry

Complete topic list for Electrochemistry in CBSE Class 12 Chemistry. Key concepts, sub-topics, and what to focus on for board exams.

32 questions22 flashcards5 concepts

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A labeled diagram of the Standard Hydrogen Electrode (SHE), illustrating its components: a platinum electrode, 1 M H+ solution, and hydrogen gas at 1 bar pressure, and how it acts as a reference elect
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4 Topics · CBSE Class 12 Chemistry

Topics in Electrochemistry

1

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)
2

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
3

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
4

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

Key Concepts

Devices that convert chemical energyThe potential of an electrode measuredE(cell) = E°(cell)Conductivity (κ) measures the abilityAt infinite dilution

Frequently Asked Questions

What are the important topics in Electrochemistry for CBSE Class 12 Chemistry?
Electrochemistry covers several key topics that are frequently asked in CBSE Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Electrochemistry — CBSE Class 12 Chemistry?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All 10 chapters — CBSE Class 12 Chemistry Syllabus

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