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Electrolytic Refining of Copper

Copper matte ...

Question

Copper matte is a molten mixture of :

C u_{2} S + F e S

(little)

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C u_{2} S + F e O

(little)

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C u_{2} O + F e O

(little)

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C u_{2} O + F e S

(little)

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Solution

The correct option is A $C u_{2} S + F e S$ (little)
In extraction of copper from its ore copper pyrite ( $C u F e S_{2}$ ), matte $C u_{2} S + F e S (l i t t l e)$ is obtained when the ore is heated.

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{F e C I}_{3}

Question 49
What happens when?

(a) ${ZnCO}_{3}$ is heated in the absence of oxygen?
(b) a mixture of ${Cu}_{2} O$ and ${Cu}_{2} S$ is heated?

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