General Principles and Processes of Isolation of Elements - Result Question 10

####10. In the extraction of copper from its sulphide ore, the metal finally obtained by the reduction of cuprous oxide with :

[2012, 2015 RS]

(a) iron (II) sulphide

(b) carbon monoxide

(c) copper (I) sulphide

(d) sulphur dioxide

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Solution:

  1. (c) 2Cu2S(s)+3O2(g)2Cu2O(s)+2SO2(g) The unchanged Cu2S, mixed with Cu2O and heated strongly in absence of air Cu2S+2Cu2O6Cu+SO2


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