Advertisements
Advertisements
Question
What is the role of dilute NaCN in the extraction of gold ?
Solution
In the extraction of gold, dilute NaCN is used as a leaching agent. Gold is converted into a cyanide complex from which the metal is extracted later by replacement.
APPEARS IN
RELATED QUESTIONS
What is the significance of leaching in the extraction of aluminium?
How can you separate alumina from silica in bauxite ore associated with silica? Give equations, if any
How is leaching carried out in case of low grade copper ores?
Write the chemical reactions involved in the process of extraction of Gold. Explain the role of dilute NaCN and Zn in this process.
Which reducing agent is employed to get copper from the leached low-grade copper ore?
Common impurities present in bauxite are:
(i) \[\ce{CuO}\]
(ii) \[\ce{ZnO}\]
(iii) \[\ce{Fe2O3}\]
(iv) \[\ce{SiO2}\]
The process of converting hydrated alumina into anhydrous alumina is called
In Baeyer's process, the leaching of alumina is done by using ______
Gold is extracted by making soluble cyanide complex. The cyanide complex is ______.
Which of the reaction is suitable for concentrating ore by leaching process?