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- Statement I: Leaching of gold with cyanide ion in absence of air <img alt="/ \mathrm{O}_{2}" src="https://entrancecorner.oncodecogs.com/gif.latex?/%20%5Cmathrm%7BO%7D_%7B2%7D"
- #Chemistry
- #General Principle and process of Isolation of metals
- #Class 12
- #Engineering
- #Joint Entrance Examination Main
- #JEE Main
Statement I: Leaching of gold with cyanide ion in absence of air leads to cyano complex of Au(III).
Statement II: Zine is oxidized during the displacement reaction carried out for gold extraction.
In the light of the above statement, choose the correct answer from the options given below.
Both statement I and staement II are correct.
Both statement I and statement II are incorrect.
Statement I is correct but statement II is incorrect.
Statement I is incorrect but statement II is correct.
Answers (1)
In leaching of Gold, the complex formed is which contains Au (I) and the complex is obtained in presence of air.
Statement I is not correct.
Reduction of the dicyonoaurum(I) complex is carried out by Zn wherein Zn is oxidised to .
Statement II is correct
Hence, the answer is Option (4)
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