Семестр Nо 2 В - 1

Question 1

AgFeS2 -> K3[Fe(SCN)6], Ag2O2

Answer 1

1. AgFeS2 + O2 = Ag2O + Fe2O3 + SO3

Question 2

Разделение Ag2O и Fe2O3

Answer 2

Ag2O + NH4OH = [Ag(NH3)2]OH

Question 3

[Ag(NH3)2]OH -> Ag2O2

Answer 3

[Ag(NH3)2]OH + KOH + K2S2O8 = Ag2O2 + K2SO4 + NH3 + H2O

Question 4

Fe2O3 -> K3[Fe(SCN)6]

Answer 4

Fe2O3 + KSCN (изб) + HSCN = K3[Fe(SCN)6] + H2O