The volume (in mL) of 0.1 M AgNO3 required for complete precipitation of chloride ions present in 30 mL of 0.01 M solution of [Cr(H2O)5Cl]Cl2, as silver chloride is close to
1. 4
2. 6
3. 20
4. 60
NiCl2{P(C2H5)2(C6H5)}2 exhibits temperature dependent magnetic behaviour (paramagnetic/diamagnetic). The coordination geometries of in the paramagnetic and diamagnetic states are respectively:
1. Tetrahedral and tetrahedral
2. square planar and square planar
3. Tetrahedral and square planar
4. Square planar and tetrahedral
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Consider the following complex ions P, Q and R,
P =
Q =
and R=
The correct order of the complex ions, according to their spin-only magnetic moment values (in B.M.) is
1. R<Q<P
2. Q<R<P
3. R<P<Q
4. Q<P<R
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In the complexes [Fe(H2O)6]3+, [Fe(SCN)6]3-, [Fe(C2O4)3]3- and [FeCl6]3-, more stability is shown by
1. [Fe(H2O6]3+
2.
3 [Fe(C2O4)3]3-
4. [FeCl6]3-
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Ammonia forms the complex ion [Cu(NH3)4]2+ with copper ions in alkaline solutions but not in acidic solution. What is the reason for it?
1. In acidic solutions hydration protects copper ions
2. In acidic solutions protons coordinate with ammonia molecules forming ions and molecules are not available
3. In alkaline solutions insoluble is precipitated which is soluble in excess of any alkali
4. Copper hydroxide is an amphoteric substance
For octahedral complex, the value of the 'spin only' magnetic moment for one of the following configuration is 2.84 BM. The correct one is
1. d4 (in strong ligand field)
2. d4 (in weak ligand field)
3. d3 (in weak as well as in strong field)
4. d5 (in strong ligand field)
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In Fe (CO)5, the Fe-C bond possesses
1. ionic character
2. -character only
3. -character only
4. both and character
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Which of the following pairs represents linkage isomers?
1. [Co(NH3)5NO3]SO4 and [Co(NH3)5SO4]NO3
2. [PtCl2)(NH3)4]Br2 and [PtBr2(NH3)4]Cl2
3. [Cu(NH3)4[PtCl4] and [Pt(NH3)4][CuCl4]
4. [Pd(PPh3)2(NCS)2 and [Pt(PPh3)2(SCN)2]
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A solution containing 2.675 g of CoCl3.6NH3 (molar mass=267.5 g mol-1) is passed through a cation exhanger. The chloride ions obtained in solution were treated with excess of AgNO3 to give 4.78 g of AgCl (molar mass = 143.5 g mol-1). The formula of the complex is
(At. mass of Ag = 108 u)
1. [CoCl(NH3)5]Cl2
2. [Co(NH3)6Cl3
3. [CoCl2(NH3)4]Cl
4. [CoCl3(NH3)3]
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Which of the following facts about the complex [Cr(NH3)6]Cl3 is wrong?
1. | The complex is an outer orbital complex. |
2. | The complex gives a white precipitate with a silver nitrate solution. |
3. | The complex involves d2sp3 hybridization and is octahedral in shape. |
4. | The complex is paramagnetic. |
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