Silver vs. Chloride ion in solution?
Silver ion reacts with chloride ion in solution to form a precipitate AgCl. What would happen to the color of a dilute solution containing FeCl4(-) if I added a solution containing silver ion?
Answer:
I've never heard of a FeCL4(-) ion. The only iron complex I'm famaliar with is the ferrocyanide ion, Fe(CN)6(-4). If FeCl4(-) does exist, it would probably behave like any chloride salt in the presence of silver ions. Both salts would exchange anions, the silver dropping out of solution with the chloride, leaving the iron behind. Most silver ions are obtained by dissolving silver nitrate in water, so the iron would end up as iron(III) nitrate, Fe(NO3)3. Reguarding the negative charge on FeCl4(-), I assume it would be balanced by some positive ion, like sodium or potassium. The entire reaction would then be:
KFeCl4 + 3AgNO3 -> KCl + Fe(NO3)3 + 3AgCl
However, I see no reason why KCl and FeCl3 would combine to form some complex iron compound. However, fresh FeCl3 is a green color and so is Fe(NO3)3. If ferric chloride were used in the presence of silver nitrate, there would be no real color change of any kind, just the generation of a thick white precipitate.
FeCl3 will eventually come to exist in equilibrium with its own hydroxide however:
FeCl3 + 3H2O <-> Fe(OH)3 + 3HCl
This solution is used to etch printed circuit boards. The ferric chloride is an opaque red color and in the presence of silver, it would eventually form a light green solution of ferric nitrate and solid white silver chloride.
Well, youd precipitate some chlorine, but that doesnt affect the color. You would probably still have a brown solution. But if pales and turns slightly green, you've made Iron (II) chloride.
well it is very hard to answer this question. FeCl4- does not exist because iron cannot complex with chlorine. The only ion that can is cyanide. If there was such a compound then it would all depend on if when it dissolves in water, the water coordinates with the iron which it can leaving free Cl- ions in solution. If that is the case you would have the color of the iron water complex, which I am not sure of the color and you would form a white precipitate with the silver and Cl- ions.
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Answer:
I've never heard of a FeCL4(-) ion. The only iron complex I'm famaliar with is the ferrocyanide ion, Fe(CN)6(-4). If FeCl4(-) does exist, it would probably behave like any chloride salt in the presence of silver ions. Both salts would exchange anions, the silver dropping out of solution with the chloride, leaving the iron behind. Most silver ions are obtained by dissolving silver nitrate in water, so the iron would end up as iron(III) nitrate, Fe(NO3)3. Reguarding the negative charge on FeCl4(-), I assume it would be balanced by some positive ion, like sodium or potassium. The entire reaction would then be:
KFeCl4 + 3AgNO3 -> KCl + Fe(NO3)3 + 3AgCl
However, I see no reason why KCl and FeCl3 would combine to form some complex iron compound. However, fresh FeCl3 is a green color and so is Fe(NO3)3. If ferric chloride were used in the presence of silver nitrate, there would be no real color change of any kind, just the generation of a thick white precipitate.
FeCl3 will eventually come to exist in equilibrium with its own hydroxide however:
FeCl3 + 3H2O <-> Fe(OH)3 + 3HCl
This solution is used to etch printed circuit boards. The ferric chloride is an opaque red color and in the presence of silver, it would eventually form a light green solution of ferric nitrate and solid white silver chloride.
Well, youd precipitate some chlorine, but that doesnt affect the color. You would probably still have a brown solution. But if pales and turns slightly green, you've made Iron (II) chloride.
well it is very hard to answer this question. FeCl4- does not exist because iron cannot complex with chlorine. The only ion that can is cyanide. If there was such a compound then it would all depend on if when it dissolves in water, the water coordinates with the iron which it can leaving free Cl- ions in solution. If that is the case you would have the color of the iron water complex, which I am not sure of the color and you would form a white precipitate with the silver and Cl- ions.
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