General Principles and Processes of Isolation of Elements
Two ores A and B were taken. On heating ore A gives whereas, ore B gives .
What steps will you take to convert them into metals?
Solution: When a carbonate ore is heated, we get carbon dioxide. A carbonate ore is calcinated to obtain oxide of the metal. Following equation shows calclnations of zinc carbonate.
When a sulphide ore is roasted, we get Sulphur dioxide. Zinc sulphide is roasted to obtain zinc oxide.
After any of the above steps; zinc oxide is reduced to obtain pure zinc.