chemical properties/changes?
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I need the chemical properties/changes to be found below..
"Copper is obtained from copper sulfide ores by heating them in air, which forms copper oxide. Heating the copper oxide with carbon produces impure copper, which is purified by electrolysis"
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In the first process this is what happens:
2CuS + 3O2 ---> 2CuO + 2SO2
Then, the following takes place:
2CuO + C ---> 2Cu(s) + CO2
In the first equation you are oxidizing sulfide with oxygen and forming a new salt. Then, in the second process you're trying to reduce the salt to elemental copper while oxidizing carbon to CO2. All these processes are considered redox in nature.
1.c 2.p 3.p 4.c 5.p I think that's right...