MCQ
Which complex is most stable ?
Where $kd =$ Dissociation constant
- A$[Cu(CN)_2]^-; Kd = 1 \times 10^{-16}$
- B$[Fe(CN)_6^-]^{-4} ; Kd = 1 \times 10^{-37}$
- ✓$[Fe(CN)_6]^{-3} ; Kd = 1 \times 10^{-44}$
- D$[Ag(CN)_2]^-; Kd = 1 \times 10^{-20}$
✓
Answer
Correct option: C.
$[Fe(CN)_6]^{-3} ; Kd = 1 \times 10^{-44}$
c
The stability constant or the dissociation constant is the equilibrium constant for the dissociation of the metal ligand bond. Higher is the stability constant, higher is the stability of the complex. The stability constant of $\left[ Fe ( CN )_{6}\right]^{3-}$ is $K _{d}=1 \times 10^{-44}$. It is minimum among the given
complexes. Hence, the complex $\left[ Fe ( CN )_{6}\right]^{3-}$ is most stable.
The stability constant or the dissociation constant is the equilibrium constant for the dissociation of the metal ligand bond. Higher is the stability constant, higher is the stability of the complex. The stability constant of $\left[ Fe ( CN )_{6}\right]^{3-}$ is $K _{d}=1 \times 10^{-44}$. It is minimum among the given
complexes. Hence, the complex $\left[ Fe ( CN )_{6}\right]^{3-}$ is most stable.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
$POCl_3$ prepared by the reaction of
→$(I)$ ${P_4} + S{O_2}C{l_2} \to $
$(II)$ ${P_4} + SOC{l_2} \to $
$(III)$ $PC{l_5} + S{O_2} \to $
$(IV)$ $PC{l_5} + {C_2}{H_5}OH \to $
Glucose and mannose are
| Column $-I$ (various solutions) | Column $-II$ (Their freezing point ) | ||
| $a$ | $0.1\,M\, BaCl_2$ solution | $p$ | $271\,K$ |
| $b$ | $0.1\,M\, NaCl$ solution | $q$ | $270\, K$ |
| $c$ | $0.1\,M\, K_3 [Fe(CN)_6]$ solution | $r$ | $268\, K$ |
| $d$ | $0.1\,M\, Al_2 (SO_4)_3$ solution | $s$ | $269\, K$ |
Given : Freezing point of $0.1\,M$ sucrose solution $= 272\,K$ and $F.pt.$ of water $= 273\,K$
Which of the following option show correct matches ? (assume, molarity=molality)
A solution of copper sulphate $(CuSO_4)$ is electrolysed for $10\, minutes$ with a current of $1.5\, amperes$. The mass of copper deposited at the cathode (at . mass of $Cu = 63\,u$) is ............ $\mathrm{g}$
→Which of the following alkyl halides will undergo SN1 reaction most readily?
Choose the incorrect option
Sulphur molecule is converted into sulphur ion, when it
Which of the following is correct?
Which of the following compound on ozonolysis give a compound that give silver mirror with tollen's reagent ?
Standard reduction potentials of the half reactions are given below :
→$F_{2(g)} + 2e^- \rightarrow 2F^-_{(aq)}\, ;$ $E^o = + 2.85\, V$
$Cl_{2(g)} + 2e^- \rightarrow 2Cl^-_{(aq)}\, ;$ $E^o = + 1.36\, V$
$Br_{2(l)} + 2e^- \rightarrow 2Br^-_{(aq)}\, ;$ $E^o = + 1.06\, V$
$I_{2(s)} + 2e^- \rightarrow 2I^-_{(aq)}\, ;$ $E^o = + 0.53\, V$
The strongest oxidising and reducing agents respectively are