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Redox Mindmap - Coggle Diagram
Redox Mindmap
Oxidation
Gains oxygen atoms
Loses hydrogen atoms
Increased oxidation state
Loses electrons
Combustion / Rusting / Dehydration
Reduction
Loses oxygen atoms
Gains hydrogen atoms
Decreased oxidation state
Gains electrons
Redox reactions
oxidation and reduction takes place simulataneously
Half ionic equations
Oxidation: element -> Ion + electrons
Reduction: element + electrons -> Ion
Non redox reaction
Precipitation / Neutralisation
Observe the colour change to identify the redox reaction
Oxidising/Reducing agents
Oxidising agents
Acidified potassium dichromate: K2Cr2O7 / orange -> green
Chlorine: Cl2 / yellowish green -> colourless
Acidified potassium manganate: KMnO4 / purple -> colourless
Reducing agents
Acidified potassium iodide solution: KI / colourless -> reddish brown solution with black solid
Strengths of oxidising and reducing agents
The more easily a substance gains electrons, the more powerful it is an oxidising agent.
The more easily a substance loses electrons, the more powerful it is an reducing agent.