# Can oxidation of ethanol by copper(II) oxide yield copper(I) oxide as one of the products?

We know that ethanol is oxidised by copper(II) oxide to an aldehyde. Copper is reduced from $\ce{Cu^2+}$ to $\ce{Cu}$. Can this reaction, with some specific condition, yield $\ce{Cu2O}$ instead? That will also be a reduction of copper, only partial.

The question was asked on a Russian chem forum and it made me curious.

• If you add an excess of a reducing sugar to the mix, the copper(II) should all get reduced back to copper(I), i.e. Cu2O. I'm pretty sure that's not what you mean though ;) – airhuff Feb 18 '17 at 4:47