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Electrolysis - Coggle Diagram
Electrolysis
activity 10.2
observation:deposition of a reddish brown substances at - electrode,liberation of gas in the positive electrode
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eg: carbon(graphite),platinum
Electroplating
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the metal that needs to be plated should be used as the positive electrode, the object that will be plated should be used as the negetive electrode
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eg for plating metals: nikel, chromium
metals like copper,silver,gold,nickel,chromium are frequently plated.
electrolytes
eg:salt solution,copper sulphate solution,acidified warter
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Non- electrolytes
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eg: distilled warter,kerosene
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hydrogen gas evolves at the negetive electrode,oxtgen gas evolves at the positive elctrode if the gas burns with a pop sound then it is hydrogen.
industries that electrolysis is used for, extraction of various metals(sodium, aluminium)
industrial manufacture of causic soda
electroplating
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