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Write chemical reactions taking place in the extraction of zin
Chemistry Part-I
Chemistry Part-I

Class 12

NCERT

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NCERT
Subject:
Chemistry
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Easy
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Write chemical reactions taking place in the extraction of zinc from zinc blende.

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Updated on: Mar 1, 2022

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Chemistry Part-I (NCERT)

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During extraction of Zn from zinc blende (ZnS), following reactions occur:
(i) ZnS is roasted in excess air at K to form ZnO.

(ii) ZnO is heated with crushed coke at K, where it is reduced to Zn.

(iii) Electrorefining is carried out for refining of impure zinc. Anode is impure zinc and cathode is pure zinc. Electrolyte is a mixture of zinc sulphate and dilute sulphuric acid (small amount). When current is passed, zinc is deposited on cathode and is collected.
At anode :
At cathode:
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Question Text
Write chemical reactions taking place in the extraction of zinc from zinc blende.
Updated OnMar 1, 2022
TopicGeneral Principles and Processes of Isolation of Elements
SubjectChemistry
ClassClass 12
Answer TypeText solution:1 Video solution: 1
Upvotes207
Avg. Video Duration6 min