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Extracting copper from Malachite Introduction Oxidation and reduction both occur together. If one substance is oxidized, another is reduced. A process where oxidation and reduction are taking place together is called Redox Reaction. An example is shown below for my explanation- If I take a mixture of Lead Oxide and Carbon heated together, the following reactions shall take place- Pbo (s) Pb(s) + CO (g) Lead Oxide + Carbon Lead + Carbon Monoxide In the above reaction, Lead Oxide is losing oxygen and forming lead. Lead oxide is, therefore, being reduced. Carbon is gaining oxygen when it forms Carbon Monoxide: Carbon is being oxidized. Oxidation and reduction are both taking place. This is called a Redox Reaction. Carbon is the substance which is necessary for the reduction to take place because it removes the oxygen. Carbon is called the oxidizing agent. A reducing agent is a substance which reduces some other substances but it is...

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