Coordination Chemistry Model Question Paper

12th Standard EM

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Chemistry

Time : 02:00:00 Hrs
Total Marks : 60
    10 x 1 = 10
  1. The sum of primary valance and secondary valance of the metal M in the complex [M(en)2(Ox)]Cl isL

    (a)

    3

    (b)

    6

    (c)

    -3

    (d)

    9

  2. An excess of silver nitrate is added to 100ml of a 0.01M solution of pentaaquachloridochromium(III)chloride. The number of moles of AgCl precipitated would be

    (a)

    0.02

    (b)

    0.002

    (c)

    0.01

    (d)

    0.2

  3. IUPAC name of the complex K3[Al(C2O4)3] is 

    (a)

    potassiumtrioxalatoaluminium(III)

    (b)

    tassiumtrioxalatoaluminate(II)

    (c)

    potassiumtrisoxalatoaluminate(III)

    (d)

    potassiumtrioxalatoaluminate(III)

  4. A magnetic moment of 1.73BM will be shown by one among the following (NEET)

    (a)

    TiCl4

    (b)

    [CoCl6]4-

    (c)

    [Cu(NH3)4]2+

    (d)

    [Ni(CN)4]2-

  5. In which of the following coordination entities the magnitude of Δ0 will be maximum?

    (a)

    [Co(CN)6]3-

    (b)

    [Co(C2O4)]3-

    (c)

    [Co(H2O)6]3+

    (d)

    [Co(NH3)6]3+

  6. Which one of the following will give a pair of enantiomorphs?

    (a)

    [Cr(NH3)6][Co(CN)6]

    (b)

    [Co(en)2Cl2]cl

    (c)

    [pt(NH3)4][ptcl4]

    (d)

    [Co(NH3)4Cl2]NO2

  7. How many geometrical isomers are possible for<<EVA035.eps>>?

    (a)

    3

    (b)

    4

    (c)

    0

    (d)

    15

  8. Which kind of isomerism is possible for a complex<<EVA039.eps>>?

    (a)

    geometrical and ionization

    (b)

    geometrical and optical

    (c)

    optical and ionization

    (d)

    geometrical only

  9. A complex in which the oxidation number of the metal is zero is

    (a)

    K4[fe(CN)6]

    (b)

    [Fe(CN)3(NH3)5]

    (c)

    [Fe(CO)5]

    (d)

    both (b) and (c)

  10. Fac-mer isomerism is shown by

    (a)

    [CO(en)3]3+

    (b)

    [Co(NH3)4(Cl)2]+

    (c)

    [Co(NH3)3(Cl)3]

    (d)

    [Co(NH3)5Cl]SO4

  11. 5 x 1 = 5
  12. Lead

  13. (1)

    Linear

  14. Tin

  15. (2)

    Photosynthesis

  16. [Ti(H2O)6]3+

  17. (3)

    Plumbate

  18. Sp

  19. (4)

    Stannate

  20. Chlorophyll

  21. (5)

    Octatahedral, d2sp3

    6 x 2 = 12
  22. 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)

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

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

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

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

  27. Define coordination number.

  28. 6 x 3 = 18
  29. Give an example for complex of the type [Ma2b2c2] where a, b, c are monodentate ligands and give the possible isomers.

  30. What is linkage isomerism? Explain with an example

  31. Classify the following ligand based on the number of donor atoms
    a)NH3
    b)en
    c)ox2-
    d) triaminotriethylamine
    e) pyridine

  32. Give the difference between double salts and coordination compounds.

  33. Write the postulates of Werner’s theory

  34. Why tetrahedral complexes do not exhibit geometrical isomerism

  35. 3 x 5 = 15
  36. What is crystal field splitting energy?

  37. What is crystal field stabilization energy (CFSE)?

  38. What are the limitations of VB theory?

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