how do you separate a sample of copper metal from copper (II) oxide
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Method
Place some sulfuric acid in a conical flask and warm it in a water bath.
Add a spatula of copper oxide powder to the acid and stir with a glass rod.
Continue adding copper oxide powder until it is in excess .
Filter the mixture to remove the excess copper oxide.
Place some sulfuric acid in a conical flask and warm it in a water bath.
Add a spatula of copper oxide powder to the acid and stir with a glass rod.
Continue adding copper oxide powder until it is in excess .
Filter the mixture to remove the excess copper oxide.
aimeekisanya:
hi can you introduce hydrogen to the copper (II) oxide. it should take away the oxygen right????
ys
thanks
not wanted my answer u can delete and go with experts
urs is fine
Answered by
1
React the copper oxide with sulfuric acid at 15–20% to form a soluble copper sulfate…may need to add an oxidizer such as in industrial stabilizied hydrogen peroxide at a few percent to oxidize any cuprous(1) oxide to cupric (2) oxide.
Note: This is the typical procedure used in copper and brass mils globally to clean copper oxides from copper and brass after annealing … many many years ago, sodium bichromate was added as an oxidizer to convert th cuprous oxide, but was replaced by hydrogen peroxide to avoid chromate effluents.
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