TS EAMCET · Chemistry · General Principles and Processes of Isolation of Metals
The oxidising and reducing agents respectively for the cyanide extraction of silver from argentite ore are
- A \(\mathrm{O}_2, \mathrm{CO}\)
- B \(\mathrm{HNO}_3, \mathrm{CO}\)
- C \(\mathrm{O}_2, \mathrm{Zn}\) dust
- D \(\mathrm{HNO}_3\), Zn dust
Answer & Solution
Correct Answer
(D) \(\mathrm{HNO}_3\), Zn dust
Step-by-step Solution
Detailed explanation
\(\mathrm{Ag}+\mathrm{CN}^{-}(a q)+\mathrm{H}_2 \mathrm{O}+\mathrm{O}_2 \longrightarrow \left[\mathrm{Ag}\left(\mathrm{CN}_2\right)^{-} a q+\mathrm{Zn}(s) \longrightarrow \mathrm{Ag}(s)+\left[\mathrm{An}(\mathrm{CN})_2 \Gamma(a q)+\mathrm{CN}_4\right)\right]^{2-}(a q)\) So, for…
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