Q. 164.2( 30 Votes )

(a) Write the ste

Answer :

a) Pure metals are extracted from their carbonate ores through the following steps:


1. Concentration of ore:


Gangue or matrix first needs to be removed from the ore keeping in mind the differences in physical and chemical properties of gangue and ore.


2. Calcination:


The carbonate ores must be heated strongly in absence of air to convert them into metal ores.


For example:


3. Reduction:


Next, reduction is carried out using a more reactive metal or carbon.


For example:


This happens because carbon has a greater binding affinity for oxygen than Zinc does.


Finally, the obtained metal is refined by electrolysis of their salt solutions.


b) Copper glance is the ore of copper sulphide. It is first roasted and then the remaining Cu2O is reduced using Cu2S in the tank.






This way, copper metal is extracted.



Electrolytic refining of copper: The electrolyte is a solution of acidified copper sulphate. The anode is impure copper, whereas, the cathode is a strip of pure copper. On passing electric current, pure copper is deposited on the cathode.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
All 3 marks NumericalsAll 3 marks NumericalsAll 3 marks Numericals46 mins
All 4 marks NumericalsAll 4 marks NumericalsAll 4 marks Numericals43 mins
Glimpses of IndiaGlimpses of IndiaGlimpses of India39 mins
All Diagram QuestionsAll Diagram QuestionsAll Diagram Questions45 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

Name the method uAll In One Science

(a) Write the steScience - Board Papers

The two metals whichLakhmir Singh & Manjit Kaur - Chemistry
How is aluminium metLakhmir Singh & Manjit Kaur - Chemistry
Name the metal whichLakhmir Singh & Manjit Kaur - Chemistry
Name the gas evolvedLakhmir Singh & Manjit Kaur - Chemistry