in the precipitation of cadmium iodate, Cd(IO3)2, w/ch of the following salts would exert a common-ion effect?

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in the precipitation of cadmium iodate, Cd(IO3)2, w/ch of the following salts would exert a common-ion effect?

NaIO3
KI
Cd(NO3)2
NH4IO4
CdCI2
CsNO3

i think it's either NaIO3 or Cd(NO3)2, but i'm not sure

2007-05-10 15:00:43 · 2 answers · asked by serene 1 in Science & Mathematics ➔ Chemistry

2 answers

You are correct; it's both of them, plusCdCl2.

2007-05-10 15:07:27 · answer #1 · answered by steve_geo1 7 · 0⤊ 0⤋

The equilibrium is

Cd(IO3)2 <> Cd2+ + 2 IO3-

NaIO3 is a strong electrolyte >> Na+ + IO3- ( IO3- common ion effect)

and

CdCl2 >> Cd2+ + 2 Cl- ( Cl- common ion effect )

2007-05-10 21:01:52 · answer #2 · answered by Anonymous · 0⤊ 0⤋