In the exteraction of copper from its sulphide ore, the metal is fanally obtained by the reduction of caprous oxide with

Options

A. copper (1) sulphide
B. sulphide dioxiode
C. iron(II) salphide
D. carbon monoxide

Answer

a

Explanation

`4CuFeS_(2)(s) + 9O_(2)(g) overset(Delta) To 2Cu_(2)S(l) + 6SO_(2)(g) + 2Fe_(2)O(s)`
` 2Cu_(2)S(l) + 3O_(2)(g) rarr 2Cu_(2)O(s) + 3SO_(2)(g)`
The mixture of copper (1) oxide and copper (1) sulphide then undergoes an unusual redox reaction (called self-reduction ) to give imkpure copper metal :
`Cu_(2)S(I)+ 2Cu_(2)O(s) rarr 6Cu_(2)l + SO_(2)(g)`