zinc blende roasted in air gives of a gas which is allowed to escape food constituent and atmospheric pollutant what is this gas
Answers
● The gas that is liberated when zinc blende roasted in air is Sulphur dioxide SO2.
● 2ZnS(s) + 3O2 (g) è2ZnO(s) + 2SO2 (g). This is the balanced equation of the chemical reaction that occurs when zinc blende is roasted in air.
● Zinc blende consists of two atoms zinc and sulphur.
● when zinc sulphide Or zinc blende is reacted with the oxygen present in air zinc oxide is formed liberating sulphur dioxide as sulphur present in zinc sulphide also reacts with the atmospheric oxygen.
The process of zinc extraction from the zinc blend is a long Process for which these are the following steps that are followed:-
1) Zinc blend that is available is is heated and roasted until Zinc oxide is gained from 8 and this process is done at the high temperature of 1200 Kelvin.
2) The crushed coke and zinc oxide we got earlier are heated together and the process gives out zinc.
3) Then for the refining of the available zinc is done using electrification which zinc is deposited on cathode from where it is extracted.
To know more:
How is zinc extracted from zinc blende with chemical reaction?
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