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Leaching the silver and gold metal with ...

Leaching the silver and gold metal with `CN^(-)`

A

Is oxidation reaction

B

Is complexation reaction

C

Is reduction reaction

D

Is both a and b

Text Solution

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The correct Answer is:
D
`Ag//Au + 8CN^(-) (aq) + 2H_(2)O (aq) + O_(2)(g) rarr [Ag//Au(CN)_(2)]^(-) (aq) + 4OH^(-) (aq)`
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PHYSICS WALLAH-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Level II
  1. The reason for floating of ore particles in concentration by froth flo...

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  2. Slag formed during smelting process in the extraction of Fe (from haem...

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  3. Leaching the silver and gold metal with CN^(-)

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  4. A sulphide ore like ZnS is first roasted into its oxide prior to reduc...

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  5. Metallergy is the process of

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  6. The rocky and siliceous matter associated with an ore is called:

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  7. Which of the following is not an ore of aluminium?

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  8. Chemical leaching is useful in the concentration of:

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  9. Process of heating ore is air to remove sulphur is:

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  10. When limestone is heated strongly, it gives off CO(2). In matallurgy t...

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  11. Which of the following metals is obtained by the self reduction proces...

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  12. Self-reduction of Cu(2)S to Cu can be carried out in.

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  13. Identify the metal M whose extraction is based on the following reacti...

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  14. Cyanide proces is used for the extraction of

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  15. Ellingham diagram represents:

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  16. Which iof the following reactions represents the self-reduction proce...

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  17. When lead nitrate is heated it breaks down into lead monoxide, nitroge...

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  18. The iron obtained from the blast furnace is called:

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  19. Which of the following fluxes is used to remove acidic impurities in ...

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  20. The metal which is obtained from both sea- water and ores form the ea...

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