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extraction of metal from its ore generally involves

extraction of metal from its ore generally involves

Jan 01, 2014 Therefore, reduction and oxidation occur in such reactions. The dissolution or extraction of gold from gold ore is an electrochemical reaction. Gold extraction generally involves two electrochemical reactions : (2.7.16) 2 Au + 4 CN − + O 2 + 2 H 2 O = 2 Au CN 2 − + H 2 O 2 + 2 OH − (2.7.17) 2 Au + 4 CN − + H 2 O 2 = 2 Au CN 2 − + 2 OH −

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