Werner's Theory of Coordination Compounds

Author:Embibe Experts
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IMPORTANT

Important Questions on Werner's Theory of Coordination Compounds

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2.33 g of compound X (empirical formula CoH12N4Cl3) upon treatment with excess AgNO3 solution produces 1.435 g of a white precipitate. The primary and secondary valences of cobalt in compound X, respectively, are [Given : Atomic mass: Co=59,Cl=35.5,Ag=108]

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The number of ions produced in water by dissolution of the complex having the empirical formula, CoCl3 4NH3 is:

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Which of the following is correct for both the following coordination compounds?

I CoCl3·6NH3 and

II PtCl4·5NH3

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Consider the following statements:

According to Werner's theory:

(1) Ligands are connected to the metal ions by ionic bonds.

(2) Secondary valencies have directional properties

(3) Secondary valencies are non-ionisable

Of these statements:

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CoCl3·4H2O is an anhydrous binary solute hence, its Werner's representation is:

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The number of ions given by CoNH36Cl3 in aqueous solution is _____.

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Which of the following is TRUE about secondary valence?

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According to Werner's theory, the most metallic elements exhibit _____ types of valence(s).

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The primary valency of iron in K4Fe(CN)6 is

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According to the postulates of Werner for coordination compounds,

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Which one is the most likely structure of CrCl3·6H2O, if 13 of the total chlorine in the compound is precipitated by adding AgNO3?

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One mole of the complex compound CoNH35Cl3 gives 3 moles of ions on dissolution in water. One mole of the same complex reacts with two moles of AgNO3 solution to yield two moles of AgCl(s). The structure of the complex is:

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Pick out a poor electrolytic conductor in solution, from among the following:

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Primary and secondary valency of Pt in Pten2Cl2Cl2 are

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The moles of AgCl precipitated per mole of the following complex, respectively, are 0, 2, 1 and 2.

i PtCl2·2NH3

ii NiCl2·6H2O

iii CoCl3·4NH3

iv PdCl2·4NH3

Based on the above information, the secondary valency of:

a Platinum is 4       b Cobalt is 6

c Nickel is 2            d Palladium is 4

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On adding potassium ferrocyanide to any ferric salt, a Prussian blue colour is obtained. The number of ions produced by ionization of this Prussian blue complex in the solution is:

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The coordination number of metal M in a complex having a molecular formula MCl3·4H2O is 6 and there is no molecule of water of crystallization in it. The volume of 0.1 M AgNO3 solution needed to precipitate the free chloride ions is 200 mL of 0.01 M. Then, the complex is:

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A solution containing 0.319 g of CrCl3·6H2O was passed through cation-exchange resin and the acid coming out of the exchange resin consumed 28.5 mL of 0.125 M NaOH solution. The formula of the complex is:

(Molecular weight of the complex is 266.7)

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The ratio of the primary valency and the secondary valency of the metal ion in the coordination compound K2NiCN4 is: 

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If an excess of AgNO3 solution is added to 100 mL of 0.024 M solution of dichloridobis (ethylenediamine) cobalt III chloride, how many moles of AgCl are precipitated?