Science Fair Project Encyclopedia
Copper(II) oxide
(Redirected from Cupric oxide)
Copper(II) oxide or cupric oxide (CuO) is the higher oxide of copper. It is a black solid which melts above 1200 °C with some loss of oxygen. It can be formed by heating copper in air, but in this case it is formed along with copper(I) oxide- thus it is better prepared by heating copper(II) nitrate, copper(II) hydroxide or copper(II) carbonate, for example:
CuCO3 → CuO + CO2
Copper(II) oxide is a basic oxide, so it dissolves in mineral acids such as hydrochloric acid, sulfuric acid or nitric acid to give the corresponding copper(II) salts, e.g.
CuO + 2 HNO3 → Cu(NO3)2 + H2O
It can also be reduced to copper metal using hydrogen or carbon monoxide, for example:
H2 + CuO → Cu + H2O
See also
Last updated: 06-01-2005 02:20:30
03-10-2013 05:06:04
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details