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Redox Reactions

ICSE · Class 11 · Chemistry

Complete topic list for Redox Reactions in ICSE Class 11 Chemistry. Key concepts, sub-topics, and what to focus on for board exams.

96 questions36 flashcards5 concepts

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A comparison chart illustrating the classical definitions of oxidation (addition of oxygen, removal of hydrogen) and reduction (removal of oxygen, addition of hydrogen) with simple chemical examples.
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4 Topics · ICSE Class 11 Chemistry

Topics in Redox Reactions

1

1. Core Ideas of Oxidation and Reduction

  • Oxidation in the classical view means addition of oxygen or removal of hydrogen.
  • Reduction in the classical view means addition of hydrogen or removal of oxygen.
  • Oxidation in the electronic view means loss of one or more electrons.
2

2. Oxidation Number and Its Rules

  • Oxidation number is a formal charge assigned to an atom using electron-counting rules.
  • Rule 1: Electrons shared between two like atoms are divided equally.
  • Rule 2: Electrons shared between unlike atoms are counted with the more electronegative atom.
3

3. Types of Redox Reactions

  • Combination reaction: two elements combine to form one compound.
  • General form of combination reaction: A + B → C.
  • Decomposition reaction: one compound breaks into two or more substances.
4

4. Balancing Redox Reactions

  • A redox equation is balanced only when electrons lost in oxidation are equal to electrons gained in reduction.
  • Two main methods are used: oxidation number method and ion electron method.
  • Oxidation number method is based on conservation of charge.

Key Concepts

Central concept: Redox Reactions

Oxidation and ReductionOxidising Agent and Reducing AgentOxidation NumberRedox ReactionTypes of Redox ReactionsCompetitive Electron TransferBalancing Redox EquationsStoichiometry of Redox Reactions

Frequently Asked Questions

What are the important topics in Redox Reactions for ICSE Class 11 Chemistry?
Key topics in Redox Reactions include Redox Reactions – Complete Chapter Overview, Redox Reactions — Complete Concept Map, Redox Reactions - Concept Overview. These are the concepts ICSE Class 11 examiners draw on most — study them first, then practise related questions.
How to score full marks in Redox Reactions — ICSE Class 11 Chemistry?
Understand the core concepts first, then work through the 96 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall 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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