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प्रश्न
What happens when Silver is leached with NaCN in the presence of air?
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उत्तर
Ag is leached with NaCN in presence of air.
4Ag(s)+ 8CN-(aq) + 2H2O(aq)+ O2(g) → 4[Ag (CN)2]-(aq) + 4OH- (aq)
2[Ag(CN)2]-(aq)+Zn(s) →[Zn(CN)4]2- (aq) + 2Ag(s)
Ag is obtained as solid by leaching process.
संबंधित प्रश्न
Name the method used for the refining of Nickel metal.
Name the method used for the refining of zirconium.
Explain the principle of the method of electrolytic refining of metals. Give one example.
Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present?
What happens when NaCN is added in an ore containing PbS and ZnS during concentration by froth floatation method?
In which of the following method of purification, metal is converted to its volatile compound which is decomposed to give pure metal?
(i) Heating with stream of carbon monoxide.
(ii) Heating with iodine.
(iii) Liquation.
(iv) Distillation.
Assertion: Zone refining method is very useful for producing semiconductors.
Reason: Semiconductors are of high purity.
Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?
Describe a method for refining nickel.
Describe a method for refining nickel.
