Class 11 Chemistry Chapter 7 Redox Reactions – Revision Notes

Quick revision notes for Class 11 Chemistry Chapter 7 (Redox Reactions). These Class 11 Chemistry Chapter 7 notes are ideal for quick revision just before exams.

Oxidation and Reduction

• Oxidation: loss of electrons (oxidation number increases).
• Reduction: gain of electrons (oxidation number decreases).

Oxidation Number Rules

• Free element=0; O usually −2; H usually +1.

Agents and Types

• Oxidizing agent: gets reduced. Reducing agent: gets oxidized.
• Disproportionation: same element oxidized and reduced.

Balancing Methods

• Oxidation number method; ion-electron (half-reaction) method.

One-Line Summary

Redox reactions involve simultaneous oxidation (electron loss) and reduction (electron gain), tracked using oxidation numbers and balanced via the oxidation number or half-reaction methods.

Written by Satish

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