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Question

During the lab, you are presented with a flask containing a clear liquid. The clear liquid contains Na+ ions, Ag+ ions and Ba2+ions in solution. What would you mix with this solution in order to separate out the individual cations?

A
CaCl2
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B
Li3PO4
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C
HCl
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D
H2S
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Solution

The correct option is A CaCl2
The 3 ions are Na+,Ag+,Ba+2 when we add CaCl2 to these 3 ions, only Na+ ion can replace Ca+2 from CaCL2 compound because the lower ECP value of Ca+2 than Na+ So, CaCL2 should be added to separate the ions.

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