i've done mine, just wanna make sure...?

Question

1.reaction between copper (II) ion and ammonia (limited abd excess).


2.reaction between iron(III) ion and KSCN.


3.reaction between cobalt(II) ion and potassium cyanide (limited and excess).


4.reaction that occurs when the mixture of Mn2+, PbO2 and HNO3 (conc) is heated.

Answer 1

1. Cu(OH)2(s) for limited ammonia and Cu(NH3)4^ 2= for the excess case.

2. Fe(SCN)2

3. Co(CN)2 for limited and maybe Co(CN)6^ 4- for the excess case

Unfortunately I don't know the last one.

Answer 2

In 2 the red complexes [Fe(SCN)x]^3-x are formed, where x=2, 3, 4, 5, 6

Answer 3

yes it right