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Chemistry Part-I

General Principles and Processes of Isolation of Elements

Write chemical reactions taking place in the extraction of zin

Chemistry Part-I

Class 12

NCERT

Chapter 1: The Solid State

31 questions

Chapter 2: Solutions

54 questions

Chapter 3: Electrochemistry

28 questions

Chapter 4: Chemical Kinetics

40 questions

Chapter 5: Surface Chemistry

27 questions

Chapter 6: General Principles and Processes of Isolation of Elements

30 questions

Write down the reactions taking place in different zones in the blast furnace during the extraction of iron.

Write chemical reactions taking place in the extraction of zinc from zinc blende.

State the role of silica in the metallurgy of copper.

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Chapter 7: The p-Block Elements

62 questions

Chapter 8: The d-and f-Block Elements

48 questions

Chapter 9: Coordination Compounds

38 questions

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Solving time: 1 mins

Write chemical reactions taking place in the extraction of zinc from zinc blende.

Name: Video solution 1: [Solved] Write chemical reactions taking place in the extraction of zinc from zinc blende. - Chemistry Part-I
Uploaded: 2022-03-01T14:24:36.000Z
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Description: Video solution 1: [Solved] Write chemical reactions taking place in the extraction of zinc from zinc blende. - Chemistry Part-I

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Chemistry Part-I (NCERT)

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Text solutionVerified

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

1200

K to form ZnO.

2 Z n S + 2 O_{2} Δ 2 Z n O + 2 S O_{2}

(ii) ZnO is heated with crushed coke at

1673

K, where it is reduced to Zn.

Z n O + C 1676 K Z n + CO

(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 :

Z n \to Z n^{2 +} + 2 e^{-}

At cathode:

Z n^{2 +} + 2 e^{-} \to Z n

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Question Text	Write chemical reactions taking place in the extraction of zinc from zinc blende.
Updated On	Mar 1, 2022
Topic	General Principles and Processes of Isolation of Elements
Subject	Chemistry
Class	Class 12
Answer Type	Text solution:1 Video solution: 1
Upvotes	207
Avg. Video Duration	6 min

Write chemical reactions taking place in the extraction of zinc from zinc blende.

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