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Answer to Question #94381 in Chemical Engineering for Nduduzo

Question #94381
When copper os extracted from its ore, the metal is not pure enough for electrical uses. The impure copper, which contains small amount of silver and gold, is purified by electrolysis. During this process, a "sludge" forms beneath the anode, which is found to contain silver and traces of Gold. Why is the silver found in this sludge? A. Silver reacts with electrolyte to form an insoluble sulphate salt. B. Silver is more dense than copper and falls off the cathode C. Silver reacts with electrolyte to form an insoluble chloride salt D. Silver is less electropositive than copper
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