In this type of reaction, there is electron migration and the potential of the system is related to the pH. Such reactions, most widely used in the field of hydrometallurgical oxidation acid leaching process is one. That is, in the presence of an oxidant, the ore is leached with an acidic leaching agent to transfer valuable metals in the ore and transferred to the leaching solution. Uranium Ore Acid U 3 O 8 oxide heap leaching copper ores cuprite (Cu 2 O) by acid leaching, which reactions are typical of such a reaction. Such reactions can be expressed by the following formula: At normal pressure and 25 ° C, their potential relationship is as follows: Since B is a solid phase mineral, the activity of H 2 O is 1. and so: Oxidative acid leaching reaction of U 3 O 8 in uranium ore: Its potential relationship is: Oxidative acid leaching reaction of Cu 2 O in copper ore: Its potential relationship is:
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