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Coordination Chemistry - Two Marks Study Materials

12th Standard EM

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Chemistry

Time : 00:45:00 Hrs
Total Marks : 30
15 x 2 = 30
1. Write the IUPAC names for the following complexes
i) Na2[Ni(EDTA)]
II) [Ag(CN)2)
iii) [Co9en)3]2(SO4)3
iv)[Co(ONO)(NH3)5]2+
v)[Pt(NH3)2Cl(NO2)]

2. Write the formula for the following coordination compounds.
a) potassiumhexacyanidoferrate(II)
b) petacarbonyliron(0)
c) pentaamminenitrito −k−N-cobalt(III)ion
d) hexaamminecobalt(III)sulphate
e) sodiumtetrafluoridodihydroxidochromate(III)

3. Arrange the following in order of increasing molar conductivity
(i) Mg[Cr(NH3)(Cl)5]
(ii) Cr(NH3)5Cl]3[CoF6]2
(iii) [Cr(NH3)3Cl3]

4. Ni2+ is identified using alcoholic solution of dimethyl glyoxime. Write the structural formula for the rosy red precipitate of a complex formed in the reaction.

5. [CuCl4]2- exists while [Cul4]2- does not exist why?

6. Calculate the ratio of $\cfrac { \left[ { Ag }^{ + } \right] }{ \left[ Ag\left( NH_{ 3 } \right) _{ 2 } \right] ^{ + } }$ in 0.2 M solution of NH3. If the stability constant for the complex $[Ag(NH_{ 3 })_{ 2 }]^{ \rightarrow }$

7. Give an example of coordination compound used in medicine and two examples of biologically important coordination compounds

8. Based on VB theory explain why [Cr(NH3)6]3+ is paramagnetic, while [Ni(CN)4]2- is diamagnetic.

9. Draw all possible geometrical isomers of the complex [Co(en)2]+ and identify the optically active isomer.

10. [Ti(H2O)6]3+ is coloured, while [Sc(H2O)6]3+ is colourless- explain

11. Write the IUPAC name of [Cu(NH3)4]SO4

12. Calculate the magnetic moment of [Fe(H2O)6]2+, if atomic number of Fe is 26.

13. Give an example for the complexes possessing co-ordination number 8 and 7

14. Identify the ligand and the central metal in the Co-ordination compound. [Co(NH3)4Cl6]CI

15. What are Ionisation isomers?