3. The following activation parameters have been measured (30 °C in MeOH) for the reaction trans-[PtL2Cl2] + py k2 [PtL2Clpy] + CH L AH+/kJ mol-1 AS/J K¹ mol-1 AV/cm³ mol-1 pyridine 49.3 -94 -8.8 PEt3 53.9 -100 -13.6 i. Explain briefly how the parameters are determined experimentally. ii. What mechanistic information can be obtained from the values? iii. Calculate the rate constant at 25.0 °C when L = pyridine

3. The following activation parameters have been measured (30 °C in MeOH) for the reaction trans-[PtL2Cl2] + py k2 [PtL2Clpy] + CH L AH+/kJ mol-1 AS/J K¹ mol-1 AV/cm³ mol-1 pyridine 49.3 -94 -8.8 PEt3 53.9 -100 -13.6 i. Explain briefly how the parameters are determined experimentally. ii. What mechanistic information can be obtained from the values? iii. Calculate the rate constant at 25.0 °C when L = pyridine

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter14: Applications Of Ultraviolet-visible Molecular Absorption Spectrometry

Section: Chapter Questions

Problem 14.13QAP: Copper(II) forms a 1:1 complex with the organic complexing agent R in acidic medium. The formation...

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7 8 t n= (1.01atm x 0-03461) k (0.092/Lalm/mol .k x 292k) - 0.00 n=0.0014577mel Hz in the reaction Mgcl2 (a9) tH2 9) mass df Mg use ng ) + HCl (aa) Imol of H2 9as produced Imol af mg mass of mg O-00/4577 md mg mg=O:014577x 24.3059/mol 0.03549 =0-0353
1. a. please and thank you
The following data were obtained on the initial rates of reaction of a d-metal complex in aqueous solution. For the experiments a. [Y] = 2.7 mol/dm³, and for experiments b. [Y] = 6.1 mol/dm³ Conc. complex/(mol dm-3) Exp. a. v/ (mol dm-3 s-1) Exp. b. v/ (mol dm-3 s-1) O oth order O 1st order O 2nd order O 3rd order 8.01 QUESTION 4 125 640 9.22 (b) use the data above to calculate the rate constant. k= 144 730 (a) What is the order of reaction with respect to the complex AND the reactant Y. Choose one. 12.11 (mol/L/s, s-1, L/mol/s, or L2/mol2/s). 3 s.f. normal format. 190 960
The following data were obtained on the initial rates of reaction of a d-metal complex in aqueous solution. For the experiments a. [Y] = 2.7 mmol/dm3, and for experiments b. [Y] = 6.1 mmol/dm3 Conc. complex/(mmol dm-3) 8.01 9.22 12.11 Exp. a. v/ (mol dm-3 s-1) 125 144 190 Exp. b. v/ (mol dm-3 s-1) 640 730 960 (a) What is the order of reaction with respect to the complex AND the reactant Y. (b) use the data above to calculate the rate constant. k = ________ (mol/L/s, s-1, L/mol/s, or L2/mol2/s). 3 s.f. normal format.
The following data were obtained on the initial rates of reaction of a d-metal complex in aqueous solution. For the experiments a. [Y] = 2.7 mmol/dm3, and for experiments b. [Y] = 6.1 mmol/dm3 Conc. complex/(mmol dm-3) 8.01 9.22 12.11 Exp. a. v/ (mol dm-3 s-1) 125 144 190 Exp. b. v/ (mol dm-3 s-1) 640 730 960 b) use the data above to calculate the rate constant. k = ________ (mol/L/s, s-1, L/mol/s, or L2/mol2/s). 3 s.f. normal format.
Name: Date: Section: Data Sheet: Investigation of Nickel and Copper Coordination Complexes Part B: The Coordination Number of Ni* Mass of Ni(NO,)2.6H,0 Volume of Deionized H,0 2441.2 291 マリトて Concentration of Ni?* Solution o 91 Moles Ni+ TRIAL #Initial TemperatureFinal TemperatureqreactionAH, reaction- Average Bond Energy Coordination Number of Ni?+ 165
6. Calculate Kc for 2N204(6) + 3021e) - 2N20 (e) K=? using.. Reaction 1 2N2e) + O2le) - 2N,0 (2) K, = 1.2 x 1035 2NO2 (6) K2 = 4.6 x 103 Reaction 2 ½ N21e) + O218) e NO2 (2) K3 = 4.1 x 10° Reaction 3
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The free energy change, AG, in the homogenous cross-exchange ET reaction of [Ru(bpy)2]* and ferricytochrome c is -104.6 kJ mol¯1. The second-order activation-limited rate constant, kobs, is 2.5 × 108 M-1 s-1. Taking KDA = 1.0 M¹, N = 1 × 1011 s-1, and x = 1, estimate the values of AG* and 2. In what kinetic region is this reaction? Hint: By substituting the Marcus equation into the expression for the rate constant of an adiabatic homogenous ET reaction, the rate constant of a cross-exchange ET reaction may be written as (AG+2)² Ket = KVN exp - 4λRT and, by rearrangement, In Ket KV 1 (AG+ 2)² 1 AG2 1 AG == + constant 42 RT 42 RT 2 RT
●●● 4G III. docs.google.com Looking at the Jablonski diagram below, 13 processes are indicated (1-13), which is the proper order of magnitude of typical rates in sec-1? Absorption 1, 3, 6. Fluorescence 2, 5. Phosphorescence 4. $2 Absorption 1, 2, 6. Fluorescence 3, 5. Phosphorescence 4. Absorption 1, 10, 6. Fluorescence 4, 2. Phosphorescence 3. Absorption 1, 2, 12. Fluorescence 3,6. Phosphorescence5. Electrochemical devices that transform chemical energy into.............. are known as primary cells. mechanical energy. electrostatic energy electric energy heat energy 83 4 + 个 T2 T1 9:-7 个

with amine concentration as shown below. A time-resolved laser spectroscopy experiment had also shown that the half-life of the phosphorescence in the absence of quencher is 29 us. What is the value of k,? [Q/(mmol dm) 1.0 5.0 10.0 I/(arbitrary units) 0.41 0.25 0.16 P17G.4 When benzophenone is exposed to ultraviolet radiation it is excited into a singlet state. This singlet changes rapidly into a triplet, which phosphoresces. Triethylamine acts as a quencher for the triplet. In an experiment in the solvent methanol, the phosphorescence intensity varied