dodusia7 wrote: ↑Fri May 29, 2020 9:44 am
FeCl
3 + NH
4SCN + Na
2S
2O
3 + Cu(NO
3)
2= ?
What are the products?
One possible reaction that can occur is the formation of a complex ion between Fe
3+ and SCN-, which is Fe(SCN)
2+. This complex ion has a deep red color and is often used as an indicator for the presence of Fe
3+ or SCN- The equation for this reaction is:
FeCl
3 + NH
4SCN -> Fe(SCN)
2+ + NH
4Cl + Cl-
Another possible reaction that can occur is the reduction of Fe
3+ to Fe
2+ by Na
2S
2O
3, which is a common reducing agent. This reaction also produces Na
2SO
4 and H
2SO
4 as byproducts. The equation for this reaction is:
FeCl
3 + Na
2S
2O
3 + H
2O -> FeCl
2 + Na
2SO
4 + H
2SO
4 + Cl-
A third possible reaction that can occur is the displacement of Cu
2+ by Fe
2+, which results in the formation of Cu and Fe(NO
3)
2. This reaction is a redox reaction, where Fe
2+ loses electrons and becomes Fe
3+, while Cu
2+ gains electrons and becomes Cu. The equation for this reaction is:
FeCl
2 + Cu(NO
3)
2 -> Cu + Fe(NO
3)
2 + Cl-
Combining these three reactions, we can write the overall equation for the reaction between FeCl
3, NH
4SCN, Na
2S
2O
3, and Cu(NO
3)
2 as:
FeCl
3 + NH
4SCN + Na
2S
2O
3 + Cu(NO
3)
2 -> Fe(SCN)
2+ + NH
4Cl + Na
2SO
4 + H
2SO
4 + Cu + Fe(NO
3)
2