How do you separate copper from copper oxide?

Answer 1

I think you mean how do you extract copper from copper oxide, if so here's your answer.

Take your copper oxide and heat it with something that is more reactive than copper. Carbon is a good example. The more reactive carbon will oxidise, taking the oxygen from the copper oxide leaving copper.

copper oxide + carbon --> copper + carbon dioxide

2Cu0 + C --> 2Cu + CO2

Answer 2

Copper oxide is metallic oxide. Metallic oxides are basic and can react with acids. Zinc oxide is an amphoteric oxide. Amphoteric oxide can react with acids as well as base. In order to separate copper oxide from zinc oxide, add sodium hydroxide solution to the mixture. Zinc oxide being amphoteric will react with NaOH to form Na22+[Zn(OH)4]2- whereas copper oxide will remain undissolved. Zinc oxide can be recovered from the solution adding acid to it.

Answer 3

Copper can be separated from copper oxide by reducing the copper oxide with carbon or hydrogen gas at a high temperature. The reduction process causes the oxygen in the copper oxide to be removed, resulting in the formation of pure copper. The separated copper can then be further processed and purified as needed.