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When ZnS and PbS minearls are present to...

When ZnS and PbS minearls are present together, then NaCN is added to separate them in the froth floatation process as a depressant, because :

A

`Pb(CN)_(2)` is precipitated while there is no effect on Zns

B

ZnS forms soluble complex, `Na_(2)Zn(CN)_(4)`

C

PbS forms soluble complex, `Na_(2)Zn(CN)_(4)`

D

both (1) and (2)

Text Solution

Verified by Experts

The correct Answer is:
B
ZnS with NaCN forms `Na_(2) [Zn(CN)_(4)]`
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