Page 76 - PC 101 practical notes 24-25..

MANSOURA NATIONAL UNIVERSIY
PHARM D- CLINICAL PHARMACY LEVEL I PHARM. ANAL. CHEM. I (PC 101)

Important example:

K sp of AgI  AgBr  AgSCN  AgCl

So:

-
+
-
-
-
 If a mix. of I , Br , SCN , Cl (of near concentrations) is treated with Ag :
+ Ag +

The order of precipitation will be:
1- AgI

2- AgBr

3- AgSCN

4- AgCl

 If we have:

AgCl ppt AgBr ppt AgI ppt

+ SCN - + SCN - + SCN -

AgSCN ppt No reaction No reaction

+ Cl -

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