Answered: reaction of [Co(NH3)4Cl2]+ with H2O is…

reaction of [Co(NH3)4Cl2]+ with H2O is 103 times faster than the reaction of [Co(NH3)5Cl]2+. By considering how the charge on a complex affects bond strengths, discuss briefly whether

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter20: Chemistry Of Selected Transition Elements And Coordination Compounds

Section: Chapter Questions

Problem 56QRT: Classify each ligand as monodentate, bidentate, and so on. (a) (CH3)3P (b) H2N(CH2)2NH(CH2)2NH2 (c)...

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Concept explainers

Coordination Chemistry

It is a part of chemistry, in which the study of compounds that have central atoms surrounded by molecules or ions, known as ligand, is known as coordination chemistry.

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The reaction of [Co(NH3)4Cl2]+ with H2O is 103 times faster than the reaction of [Co(NH3)5Cl]2+. By considering how the charge on a complex affects bond strengths,
discuss briefly whether this data is consistent with a Id or Ia mechanism

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The complex trans-[Co(en)2Cl2]+ undergoes substitution of Cl- by H2O slower than the complex trans-[Co(en)2Cl2]. explain the reason for the difference
2. The reaction of [Co(NH3)4Cl2]' with H20 is 103 times faster than the reaction of [Co(NH3)5CI]?. By considering how the charge on a complex affects bond strengths, discuss briefly whether this data is consistent with a Id or Ia mechanism
In spite of the high equilibrium constant (K = 1025) for the reaction given here, the reaction proceeds very slowly, reaching equilibrium only after several days at room temperature. [Co(NH3)6]3+ + 6 H3O* = [Co(H20)6]3+ + 6 NH,* The observation is consistent with: the activation energy for the forward reaction being low. [Co(NH3)6]3+ being unstable in strong acid. [Co(NH3)6]3+ being more labile than [Co(H2O)6]3+. the classification of [Co(NH3)6]3+ as an inert complex.
Which statement is true regarding the following reaction? cis-Λ-[Co(en)2Cl2] + OH− --> cis-[Co(en)2Cl(OH)] + Cl− Group of answer choices At high OH- concentrations, the product complex is a Δ isomer. This reaction does not actually take place - instead of en ligands, there must be NH3 ligands. At low OH- concentrations, the product complex is a Δ isomer. The first step of this reaction mechanism is the dissociation of Cl-.
COBALT COMPLEX: [CoCl4]2-(aq) + 6H2O(l) « [Co(H2O)6]2+(aq) + 4Cl-(aq) + Heat Blue Pink STEPS #- Solutions Observations 1-DISSOLVE COBALT COMPLEX PINK SOLUTION 2-SOLUTION PLUS HCl BLUE SOLUTION 3-ADD WATER PINK SOLUTION 4-HEAT SOLUTION BLUE SOLUTION According to the equilibrium equation, which ion(s) do you have when the solution dissolved? Explain how you know the identity of the ion(s) present. 2. Explain what happened when the HCl was added to the solution. 3. Explain what happened when the H2O was added to the solution. 4. Explain what happened when the solution was heated. Was the reaction exothermic or endothermic?
Consider the following reaction: [Cr(H2O)5(SCN)]2+ + Yn- --> [Cr(H2O)5Y](3-n)+ + SCN- Which statement is true if this reaction occurs via a dissociation mechanism? Group of answer choices Changing the incoming ligand, Yn-, will have a large effect on the rate constant. The first step of the mechanism is the addition of the Yn- ligand to form a 7-ccordinate intermediate, [Cr(H2O)5(SCN)Y](2-n)+ Changing the incoming ligand, Yn-, will have very little effect on the rate constant. It is impossible for this reaction to occur via a dissociation mechanism.
Explain why the velocity constant (k) of the complex reaction[Co(NH3)5N3]2+ with [Cr(H2O)6]2+ is on the order of 3x105 while for [Co(NH3)6]3+ with [Cr(H2O)6]2+ is 9x10-5 .Indicate the steps of the proposed mechanism and the species involved.
Is the reaction [Co(NH3)6]3+ + [Cr(NH3)6]2+ likely to proceed by an inner-sphere or outer-sphere mechanism? Explain the answer.
Explain why the hydrolysis of [Co(NH3)5Cl]2+ in the presence of base muchfaster than that of [Co(py)5Cl]2+? Illustrate your answer with suitable diagrams.
1. The Cp2Rh2[u-(CF3C=CCF3)](CO)(CNR) complex has a Rh-Rh bond distance of 2.67 Å, strongly indicating a covalent bond between the rhodium atoms. How would you electron count this complex to accommodate a Rh-Rh covalent bond? Clearly show the electron counting.
Explain why [Co(NH3)6]3+ is an inner orbital complex whereas [Ni(NH3)6]2+ is an outer orbital complex. (At. no. Co = 27, Ni = 28)
4. Use d-orbital splitting diagrams to explain whether [Cr(H₂O)6]2+ or [Cr(H₂O)]3+ will undergo a faster ligand substitution reaction. By which type of mechanism will ligand substitution most likely proceed?