NEET2017ChemistryCoordination CompoundsActual
The correct order of the stoichiometries of AgCl formed when AgNO 3 is treated in excess with the complexes: CoCl 3 . 6 NH 3 ,   CoCl 3 . 5 NH 3 ,   CoCl 3 . 4 NH 3 , respectively, is:
Options
- A1   AgCl ,   3   AgCl ,   2   AgCl
- B3   AgCl ,   1   AgcCl ,   2   AgCl
- C3   AgCl ,   2   AgCl ,   1   AgCl
- D2   AgCl ,   3   AgCl ,   1   AgCl
Correct answer
C. 3   AgCl ,   2   AgCl ,   1   AgCl
Step-by-step solution
[ Co ( NH 3 ) 6 ] Cl 3 → AgNO 3 3   moles of AgCl [ Co ( NH 3 ) 5 Cl ] Cl 2 → AgNO 3 2   moles   of AgCl [ Co ( NH 3 ) 4 Cl 2 ] Cl → AgNO 3 1   mole of AgCl The complexes are respectively Co NH 3 6 Cl 3 ,   Co NH 3 5 Cl Cl 2 and Co NH 3 4 Cl 2 Cl .