Co-Ordination Compounds Question 28
Question: In the extraction of which of the following, complex ion forms
[MP PET 1989]
Options:
A) $ Cu $
B) $ Ag $
C) $ Fe $
D) $ Na $
Show Answer
Answer:
Correct Answer: B
Solution:
$ Ag_2S+4NaCN $ ⇌ $ \underset{Sodiumdicynoargentate}{\mathop{2Na,[ Ag{{( CN )}_2} ]+Na_2S}}, $
$ 2Na,[Ag{{(CN)}_2}]+Zn\to $
$ \underset{Sodiumtetracynozincate\text{(ppt)}}{\mathop{Na_2,[Zn,{{(CN)}_4}]+2Ag\downarrow }}, $
