Statement I: Leaching of gold with cyanide ion in absence of air / O2 leads to cyano complex of Au(III)
Statement II: Zinc is oxidized during the displacement reaction carried out for gold extraction.
In the light of the above statements, choose the correct answer form the options given below.
Statement I: Leaching of gold with cyanide ion in absence of air / O2 leads to cyano complex of Au(III)
Statement II: Zinc is oxidized during the displacement reaction carried out for gold extraction.
In the light of the above statements, choose the correct answer form the options given below.
Option 1 -
Both Statement I and Statement II are correct.
Option 2 -
Both Statement I and Statement II are incorrect.
Option 3 -
Statement I is correct but Statement II is incorrect.
Option 4 -
Statement I is incorrect but Statement II is correct.
-
1 Answer
-
Correct Option - 3
Detailed Solution:Leaching involves the given reaction,
Here, O2 is required for formation of Au (l) cyanide complex but no complex in absence of O2.
In above displacement reaction, Zn is oxidized.
Taking an Exam? Selecting a College?
Get authentic answers from experts, students and alumni that you won't find anywhere else
Sign Up on ShikshaOn Shiksha, get access to
- 65k Colleges
- 1.2k Exams
- 688k Reviews
- 1800k Answers