Question

the extraction of is CU from 2CU S which substance is used for auto reduction of sulphide ore​

Answer 1

Hey mate ☺

Copper is found as Cu2S in nature can be obtained from its ore by just heating in air.

2Cu2S+3O2-------->2Cu2O+ 2SO2

The copper is formed of by the reduction of Cu2O and Cu2S in the process of extraction of copper from its sulfide ore. This reaction gives 98% copper by auto reduction. Electrolytic refining can be used for obtaining 99.9% pure copper.

The reaction of self-reduction is given below:

2Cu2O + Cu2S -----> 6Cu + SO2

It is called self-reducing because copper oxide itself reduced the copper sulfide to give copper and sulfur dioxide.

Hope it helps you ☺✌✌

Answer 2

Oxygen is used

In presence of excess air then from CuS we will get Cu