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An Ore on heating in air gives  Sulphur Dioxide gas.Describe the steps involved in extraction of metals  from such ores.State which of the following reaction will take place or which will not. Give reasons1. space space Zn plus CuSO subscript 4 rightwards arrow ZnSO subscript 4 plus Cu 2. space Fe plus ZnSO subscript 4 rightwards arrow FeSO subscript 4 plus Zn
Asked by agraharianiruddha | 06 Jan, 2019, 02:12: PM
answered-by-expert Expert Answer
(a) 

(i) Roasting: When zinc sulphide (zinc blende ore) is strongly heated in air (roasted), it forms zinc oxide and sulphur dioxide.

(ii) Reduction: Zinc oxide obtained is heated with carbon to form zinc metal.
 
(b) According to reactivity series, Zn is more reactive than copper hence zinc displaces copper from its copper sulphate solution.
     Hence first reaction is possible not the second one.
Answered by Ramandeep | 07 Jan, 2019, 10:22: AM

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