[Swift77]

Hi there,
next week i got some experiments
these what i got to do:
dissolve CoCl₂ in 3 ml H²O and put 3 ml Ethylacetat onC₄H₈O₂ in the test tub and shake it. Then put Ammoniathiocyanat NH₄SCN on it and shake it again.Then we should recognize two phase in this solution and put so much Ammoniathiocyanat in it till the upper phase also gets blue.
Well I guess that the organic phase got a higher solubility product as the Aqua-complex. But my question is also what does the Ethylacetat do in this solution.
Then we should also describe which complexes are found in the solution
First there is
Co²⁺ + 5 H₂O + 2 Cl^- Co(H₂O)₅²⁺ + 2 Cl^-

I´m not sure what happens when I put Ethylacetat in the solution
but I guess Ethen is also produced

Co²⁺+2SCN⁻ Co(SCN)₂

when more acidic this is generated?
Co²⁺+4SCN⁻ [Co(SCN)₄]²⁻


Help would be really appreciated. I´m new to this theme and they are hammering us with this stuff eventhough we are in the first semester but we have to know it.
Thank you