Copper(II) oxide



Copper(II) oxide
IUPAC name Copper(II) oxide
Other names cupric oxide
Molecular formula CuO
Identifiers
CAS number 1317-38-0
Properties
Molar mass 79.545 g/mol
Density 6.31 g/cm3
Melting point

1201 °C + (1474 K)

Solubility in water insoluble
Band gap 1.2eV
Structure
Crystal structure monoclinic
Space group C2/c
Lattice constant a = 4.6837 Å,b = 3.4226 Å,c = 5.1288 Å
Lattice constant α = 90°, β = 99.54°, γ = 90°
Hazards
MSDS ScienceLab.com
NFPA 704
0
2
0
 
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Copper(II) oxide or cupric oxide (CuO) is the higher tenorite.

Chemistry

It is a black solid with an copper(II) hydroxide or copper(II) carbonate:

2Cu(NO3)2 → 2CuO + 4NO2 + O2
Cu(OH)2(s) → CuO(s) + H2O(l)
CuCO3 → CuO + CO2

Copper(II) oxide is a nitric acid to give the corresponding copper(II) salts:

CuO + 2HNO3 → Cu(NO3)2 + H2O
CuO + 2HCl → CuCl2 + H2O
CuO + H2SO4 → CuSO4 + H2O

It can also be reduced to carbon monoxide:

CuO + H2 → Cu + H2O
CuO + CO → Cu + CO2

It is also made by reacting solid oxygen gas.

2Cu + O2 → 2CuO

Crystal structure

Copper(II) oxide belongs to the unit cell is C2/c, and its lattice parameters are a = 4.6837(5), b = 3.4226(5), c = 5.1288(6), α = 90° , β = 99.54(1)°, γ = 90°.

the unit cell of copper(II) oxide
part of the crystal structure of CuO

Health effects

Copper(II) oxide is an irritant. It also can cause damage to the Wilson's disease. Handling copper(II) oxide should be done in well ventilated area, and care should be taken to avoid contact with the skin or eyes. After handling, one should wash thouroughly.[1]

Uses

Cupric oxide is used as a copper alloys.[3]

Another use for cupric oxide is as a substitute for iron oxide in thermite. This can turn the thermite from an incendiary to a low explosive.

Use in disposal

Cupric oxide can be used to safely dispose of hazardous materials such as oxidation[4].


C6H5OH + 14CuO → 6CO2 + 3H2O + 14Cu
C6Cl5OH + 2H2O + 9CuO → 6CO2 + 5HCl + 9Cu

Properties

See also

References

  1. ^ MATERIAL SAFETY DATA SHEET: Copper (II) oxide. Iowa State University (2003). Retrieved on 2007-01-26.
  2. ^ Uses of Copper Compounds: Other Copper Compounds. Copper Development Association (2007). Retrieved on 2007-01-27.
  3. ^ Cupric Oxide Data Sheet. Hummel Croton Inc. (2006-04-21). Retrieved on 2007-02-01.
  4. ^ Kenney, Charlie W. & Uchida, Laura A. (April), , . Retrieved on 29 June 2007
  5. ^ Solar Energy Materials and Solar Cells 91, 843 (2007)
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Copper(II)_oxide". A list of authors is available in Wikipedia.