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Recap - Number Painter

Part of the Oxidation and Reduction section of Coddy's Chemistry journey. Lesson 5 of 27.

Challenge

Sodium thiosulfate, Na₂S₂O₃, is used to remove the color of iodine in titrations and once fixed photographs. Give each element its oxidation number.

Try it yourself

Oxidation numbersGive the oxidation numbers in Na₂S₂O₃

All lessons in Oxidation and Reduction

1Electron Transfer

What Is Oxidation Oxidation Numbers Rules for Oxidation Numbers Oxidation Numbers in IonsRecap - Number Painter

4Metals and Reactivity

The Reactivity Series Displacement Reactions Metals and Acids Corrosion and Rust Recap - Metal Contest

2Redox Reactions

Spotting Redox Oxidizing Agents Reducing Agents Electrons Passed Recap - Who Gave Electrons

5Electrochemistry

Electrolysis Electrolysis of Melts Cells and Batteries Recap - Smelter

3Half-Equations

Writing Half-Equations Balancing with Electrons Half-Equations in Acid Combining Half-Equations Recap - Permanganate

6Practice Problems

Recap - Bleach and Iodide Recap - Copper and Silver Recap - Bromine Redox