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A co-ordination complex of cobalt has a molecular formula containing five ammonia molecules, one nitro group and two chlorine atoms for one cobalt atom. One mole of this compound produces three mole ions in an aqueous solution. In reacting this solution with the excess of silver nitrate solution, two moles of $A g C l$ get precipitated. The ionic formula of this complex would be:

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Important Questions on Coordination Compounds

EASY

Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

Primary valency of

Co

[Co {(en)}_{2} {Cl}_{2}] Cl

EASY

Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

Which of the following types of valences, according to Werner's theory, is also called as primary valence ?

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Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

The conductivity measurement of a coordination compound of cobalt (III) shows that it dissociates into 3 ions in solution. The compound is

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Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

The secondary valency and the number of hydrogen bonded water molecule(s) in ${CuSO}_{4} \cdot 5 H_{2} O$ , respectively, are:

EASY

Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

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:

EASY

Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

The number of moles of ions formed on complete ionisation of

1

mole of

[Co {({NH}_{3})}_{3} {Cl}_{3}]

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Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

A d-block metal

M

forms two complexes with the formulae

{MCl}_{4} . 2 HCl

and

{MCl}_{2} . 2 {NH}_{3}

. When excess of

A g N O_{3}

solution is added to

1

mole of each complex,

A g C l

precipitate is not formed. The secondary valency of metal

M

in the complexes is respectively

EASY

Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

Which of the following co-ordinate complexes is an exception to EAN rule?

(Given At. Number Pt = 78, Fe = 26, Zn = 30, Cu = 29)

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Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

Which one of the following complexes will consume more equivalents of aqueous solution of

{AgNO}_{3}

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Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

According to Werner’s theory the geometry of the complex is determined by

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Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

Cobalt (III) chloride forms several octahedral complexes with ammonia. Which of the following will not give test for chloride ions with silver nitrate at

25^{o} C

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Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

On treatment of

100 mL

0.1 M

solution of

{CoCl}_{3} . 6 H_{2} O

with excess

{AgNO}_{3}; 1 .2 \times 10^{22}

ions are precipitated. The complex is:

EASY

Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

Which of the following pairs of complexes whose aqueous solutions gives pale yellow and white precipitates respectively with

0.1 {MAgNO}_{3} ?

EASY

Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

The number of cations produced by Mohr's salt in solution is

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Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

The correct order of electrical conductivity of the given complexes is

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Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

What is effective atomic number of

Fe

{[Fe {(CN)}_{6}]}^{4 -}

(At. no. of

Fe = 26

)

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Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

The volume $(i n m L)$ of $0.125 M {A g N O}_{3}$ required to quantitatively precipitate chloride ions in $0.3 g$ of $[C o {(N H_{3})}_{6}] C l_{3}$ is __________.
${}^{M}{[C o {(N H_{3})}_{6}]} C l_{3} = 267.46 g / m o l$
${}^{M}{A g N O}_{3} = 169.87 g / m o l$

Report the nearest integer as the answer.

EASY

Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

Addition of excess of ${AgNO}_{3}$ to an aqueous solution of $1$ mole of ${PdCl}_{2} \cdot 4 {NH}_{3}$ gives $2$ moles of $AgCl$ . The conductivity of this solution corresponds to:

EASY

Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

The number of ions produced in water by dissolution of the complex having the empirical formula,

{CoCl}_{3} 4 {NH}_{3},

EASY

Chemistry>Inorganic Chemistry>Coordination Compounds>Werner's Theory of Coordination Compounds

2.33

g of compound

X

(empirical formula

{CoH}_{12} N_{4} {Cl}_{3}

) upon treatment with excess

{AgNO}_{3}

solution produces

1 .435 g

of white precipitate. The primary and secondary valencies of cobalt in compound

X,

respectively, are

[Given: Atomic mass:

C o = 59, C l = 35.5, A g = 108]

Important Questions on Coordination Compounds

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