In concentration of PbS containing ZnS as impurity depressant used is

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General Principles and processes of Isolation of Elements

easy

In the concentration of $PbS$ containing $ZnS$ as impurity the depressant used is

A

$NaCN$

B

$ZnSO_4$

C

$PbSO_4$

D

aniline

Solution

$Zns + 4NaCN \to Na_2 [Zn(CN)_4] \downarrow + Na_2S$

Standard 12

Chemistry

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