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प्रश्न
What happens when Silver is leached with NaCN in the presence of air?
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 zirconium.
Outline the principles of refining of metals by the following methods: Vapour phase refining
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.
Why is an external emf of more than 2.2 V required for the extraction of \[\ce{Cl2}\] from brine?
Write two basic requirements for refining of a metal by Mond process and by Van Arkel Method.
How are metals used as semiconductors refined? What is the principle of the method used?
Give two requirements for vapour phase refining.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
