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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3mt093

In the conversion of copper matte in a Bessemer converter, the final stage is $2 Cu X_{2} O + Cu X_{2} S 6 Cu + SO X_{2}$ . Select the correct statements.

A $Cu X_{2} O$ behaves as an oxidising agent.
B $Cu X_{2} S$ behaves as a reducing agent.
COne mole of $Cu X_{2} O$ reacts with one mole of $Cu X_{2} S$ .
DNo carbon is required for this reduction.

Answer: A, B, D

Sulphur is oxidised (

- 2

to

+ 4

) and copper(I) is reduced to Cu, so

Cu X_{2} S

reduces and

Cu X_{2} O

oxidises, i.e. self-reduction. The balanced equation shows 2 mol

Cu X_{2} O

per mol

Cu X_{2} S

, not 1:1.

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