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Electrolysis
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- The purpose of using electrolysis in metal extraction is to separate metal ions from a solution or molten substance and deposit them as pure metal at the electrodes. Electrolysis is particularly useful for extracting metals that cannot be obtained through reduction or smelting, such as aluminum and magnesium.
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Different methods are used to extract a metal depending on its position in the reactivity series. The diagram shows a simple reactivity series, including carbon and hydrogen.
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Metals can be arranged in order of reactivity by observing...
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Learn about the processes that are related to extraction of metals and learn about the reactivity series with BBC Bitesize GCSE Chemistry (WJEC).
Metals can be arranged in order of reactivity by observing their reactions with water, acid and displacement reactions with other metal compounds. This determines how it is extracted from its...
Electrolysis - Extracting Metals. Electrolysis is used to extract reactive metals from molten ores (melted materials containing metals). Electrolysis is used to extract metals such as aluminium, which are higher in the reactivity series than carbon.
Higher placed metals (above carbon) have to be extracted using electrolysis as they are too reactive and cannot be reduced by carbon. Lower placed metals can be extracted by heating with carbon which reduces them. The extraction method depends on the position of a metal in the reactivity series.
Jul 12, 2023 · Several processes are used for extraction of same metal depending on occurrence and chemical requirements. It takes multiple steps to extract the "important" element from the ore: First, the ore must be separated from unwanted rocks.
The most reactive metals will react with cold water: Products are a metal hydroxide (forming an alkaline solution) and hydrogen gas. E.g. with potassium: 2K + 2H2O -> 2KOH + H2. Fairly reactive metals react with acids: acid + metal → salt + hydrogen.
