Question

CoCl3.4H2O is an anhydrous binary solute hence its Werner’s representation is :

• A.
• B.
• C.
• D. None

Answer 1

Answer: (C)

Answer 2

Anhydrous binary compound will have all water molecules in coordination sphere so its formula will be [Co(H2O)4Cl2]Cl. Two Cl– will have dual behaviour i.e. they will act as primary valency as well as the secondary valency and third Cl– will satisfy only primary valency.