Coodination Chemistry Test

Result

Coodination Chemistry Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is π-acid ligand

A
NH₃

B
CO

C
F ¯

D
ethylene diamine

Solution

CO is a π-acid ligand as it contains π- bonds.
Question 2
1 / -0

Pick out from the following complex compounds, a poor electrolytic conductor in solution ?

A
K₂[PtCl₆]

B
[Co(NH₃)₃(NO₂)₃]

C
K₄[Fe(CN)₆]

D
[Co(NH₃)₄]SO₄

Solution

[Co(NH₃)₃(NO₂)₃] There is no ions out of the coordination sphere thus it is poor conducter in electrolytic solution

K₂[Pt Cl₆] = 3 ions

[Co(NH₃)₃(NO₂)₃ ] = out of the coordination sphere no ions (non ionisable)

K₄[Fe (CN)₆] = 5 ions

[Co(NH₃)₄].SO₄ = 2 ions

More ions ∝ more conductivity
Question 3
1 / -0

Which of the following observations/statements is/are correct?

A
Anhydrous CuSO₄ becomes blue in aqueous medium due to the complex formation

B
Ni(CN)₂ dissolves in KCN giving an orange-red solution

C
Fe(OH)₃ can be precipitated by adding NH₄OH to K₃[Fe(CN)₆]

D
None of the above

Solution

Anhydrous CuSO₄ become blue in aqueous medium due to the complex formation.
CuSO₄ + 4 NH₃→ [Cu(NH₃)₄]⁺²