1: Formulation of Cobalt(III) Chloride-Ammonia Complexes
Yellow
[Co(NH3)6]
3+3Cl
–
1:3 electrolyte
Purple
[CoCl(NH3)5]
2+2Cl
–
1:2 electrolyte
Green
[CoCl2(NH3)4]
+Cl
–
1:1 electrolyte
Violet
[CoCl2(NH3)4]
+Cl
–
1:1 electrolyte
Rationalised 2023-24
120
Chemistry
(i) Secondary 4
(ii) Secondary 6
(iii) Secondary 6
(iv) Secondary 6
(v) Secondary 4
On the basis of the following observations made with aqueous solutions,
assign secondary valences to metals in the following compounds:
Solution
Solution
Solution
Solution
Solution
Difference between a double salt and a complex
Both double salts as well as complexes are formed by the combination
of two or more stable compounds in stoichiometric ratio However, they
differ in the fact that double salts such as carnallite, KCl MgCl2 6H2O,
Mohr’s salt, FeSO4