Download App

STD 12 - 5. Co-ordination chemistry — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 5. Co-ordination chemistry4 Marks
MCQ
From the stability constant (hypothetical values), given below, predict which is the strongest ligand :
  • A
    $Cu^{2+} + 4NH_3 \rightleftharpoons  [Cu(NH_3)_4]^{2+} \,\,\,,$            $K = 4.5 \times 10^{11}$
  • ✓
    $Cu^{2+} +4CN^- \rightleftharpoons  [Cu(CN)_4]^{2-} \,\,\,,$                  $K = 2.0 \times 10^{27}$
  • C
    $Cu^{2+} + 2en \rightleftharpoons  [Cu(en)_2]^{2+} \,\,\,,$                 $K = 3.0 \times 10^{15}$
  • D
    $Cu^{2+} + 4H_2O \rightleftharpoons  [Cu(H_2O)_4]^{2+} \,\,\,,$                 $K = 9.5 \times 10^8$
✓

Answer

Correct option: B.
$Cu^{2+} +4CN^- \rightleftharpoons  [Cu(CN)_4]^{2-} \,\,\,,$                  $K = 2.0 \times 10^{27}$
b
A stability constant is an equilibrium constant for the formation of
a complex in solution. It is a measure of the strength of the interaction
between the reagents that come together to form the complex.
As $C u^{2+}+4 C N^{-} \rightleftharpoons\left[C u(C N)_{4}\right]^{2-}, K=2.0 \times 10^{27}$ has maximum value of
stability constant so $C N^{-}$ is strongest ligand.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The hybridisation and structure of $XeF_6$ is :
→
A solution of $A{l_2}{(S{O_4})_3}\,\{ d = 1.253\,gm/ml\} $contain $22\%$  salt by weight. The molarity, normality and molality of the solution is
→
Which of the following has highest heat of hydrogenation.
→
For the reaction : $2A + B \to  A_2B$ ; the rate $= K[A]\, [B]^2$ with $K = 2.0\times10^{-6}\, lit^2\, mol^{-2}\, sec^{-1}$. Initial concentration of $A$ and $B$ are $0.2\, mol/lit$ and $0.4\, mol/lit$ respectively. Calculate the rate of reaction after $[A]$ is reduced to $0.12\, mol/litre$.
→
(Image) $\xrightarrow{{electrolysis}}$ Product is
→
Most acidic among given compound is
→
The $IUPAC$ name of compound

$\begin{array}{*{20}{c}}
  {HO - C = O\,\,\,\,\,\,\,C{H_3}} \\ 
  {\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\ 
  {C{H_3} - C = C-C - H} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,|} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,N{H_2}\,\,\,\,\,Cl} 
\end{array}$

is :

→
Which is used in the manufacture of safe matchsticks
→
The ligands which can get attached to the central metal ion through more than one atom are called
→
If the sum of $(n + l)$ is $6$ ; how many $e^{-1}\,s$ would have clock wise spin associated with this energy leval
→