Question

What is the formula for copper (I) oxide?

Answer 1

Copper (I) oxide is also known as cuprous oxide. Copper is a chemical element with the symbol ‘Ca’ having the atomic number $29$ and an oxide is a chemical compound that contains at least one oxygen atom. It is well established that the oxide is a dianion of oxygen and the molecular formula of oxygen is, ${O^{2 - }}$.

Complete step by step answer:
We have to remember that the formula of copper (I) oxide can be written as, $C{u_2}O$. It is an inorganic compound having a cubic structure. And the color of the compound is red. Cuprous oxide is commonly used as a fungicide and a pigment. This copper (I) oxide is responsible for the pink colour of Benedict test. The copper atom present in the cuprous oxide is arranged in an fcc lattice and the oxygen atom is arranged in a bcc sublattice.
Copper (I) oxide can be prepared by the oxidation of copper metal and the reaction can be written as,
$4Cu + {O_2} \to 2C{u_2}O$
And the cuprous oxide is reacting with water in the presence of oxygen and there is a formation of copper (II) hydroxide. The reaction can be written as,
$C{u_2}O + 4{H_2}O + {O_2} \to 4Cu{\left( {OH} \right)_2}$
We must have to know that the copper (I) oxide is insoluble in water and also insoluble in organic solvents. However, it is soluble in aqueous solutions of ammonium salt and ammonia.

Note: The formula of copper (I) oxide can be written as, $C{u_2}O$ which is also known as cuprous oxide or dicopper oxide, red copper oxide etc. And the solid form of it is diamagnetic in nature and is insoluble in water with solubility in concentrated ammonia and dilute hydrochloric acid, dilute sulphuric acid, etc