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Chemical used as a depressant in separat...

Chemical used as a depressant in separatin ZnS from PbS in froth-floatation process , is

A

`NaCN`

B

`NaCl`

C

`BaCl_(2)`

D

`ZnSO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
A
PbS can be separated from ZnS in the presence of NaCN. It depresses the floatation property of ZnS by forming a complex `Na_(2)[Zn(CN)_(4)]` .
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