CBSE Class 12-science Answered
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Asked by jain.pradeep | 26 Feb, 2020, 09:58: AM
Expert Answer
Option (c) is correct.
In the cyanide extraction process of silver from argentite ore the oxidising and reducing agents used are O2 and Zn dust respectively.
The reactions involved in cyanide ectraction process are:
Ag2S + 4NaCN → 2Na[Ag(CN)2] + Na2S
4Na2S + 5O2 + 2H2O → 2Na2SO4 + 4NaOH + 2S
oxidising agent
2Na[Ag(CN)2] + Zn → Na2[Zn(CN)4] + 2Ag−
Reducing agent
Answered by Varsha | 26 Feb, 2020, 05:03: PM
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