Calculate the concentration of a solution species that yields a 500 μA peak current response in a cyclic voltammetry experiment with a sweep rate of 50 mV s-1 at a 0.5 cm2 planar electrode and a temperature of 30 °C. Assume the species undergoes a two electron oxidation/reduction and has a diffusion coefficient of 2 x 10-5 cm2 s-1. 2.33 x 10-5 mol cm-2 2.33 x 10-6 mol cm-2 1.33 x 10-5 mol cm-2 1.33 x 10-6 mol cm-2

Calculate the concentration of a solution species that yields a 500 μA peak current response in a cyclic voltammetry experiment with a sweep rate of 50 mV s-1 at a 0.5 cm2 planar electrode and a temperature of 30 °C. Assume the species undergoes a two electron oxidation/reduction and has a diffusion coefficient of 2 x 10-5 cm2 s-1. 2.33 x 10-5 mol cm-2 2.33 x 10-6 mol cm-2 1.33 x 10-5 mol cm-2 1.33 x 10-6 mol cm-2

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Create a calibration curve. Electrode potential (mV) vs. log [Ca2+]. (complete with, the equations of the best fit line, and the correlation coefficient) log[Ca 2+] Electrode potential (mV) -5 -105.4 -105.1 -106.5 -6 -120.9 -120.3 -120.6 -4.4 -96.6 -97.2 -96.5 -4 -85.5 -85.8 -85.2 -3 -56.6 -56.2 -56.4 -2 -26.6 -27.1 -27.1
In a voltammogram, which of the following statements is correct a. The limiting current i, is used for quantitative analysis b. The half-wave potential E1/2 is used for quantitative analysis c. The limiting current i, depends on the identity of the analyte d. The half-wave potential E1/2 dependens on the analyte concentration
L 1-Kohlroush law 2- Effect temperature on conductance الوصل ال 2 B Molar conductivity for 0.05m kel is 0.0133 ohm¹ m² mol¹) at 25C°. find molar conductance of ion and electric mobility of ion for k and CT if you know transport (number for k is 0.4899 at same concentration.
The boundary equivalent conductivity of the 0.1 M electrolyte with a resistance of 0.33 ohms was determined as 320 Scm-2mol-1 and the conductivity ratio was determined as 0.55. According to this information, the electrolyte; a) Equivalent conductivity b) Self conductivity c) Find the cell constant of the electrode used.
Calculate the H* from the following data obtained by the moving boundary method using cadmium chloride as the indicator electrolyte: • Concentration of HCI = 0.100 M • Movement of boundary = 7.50 cm %3D Cross -section Area = 1.24 cm2 Current =2 A • Time • Molar conductivity of solution 350.6 S cm2 mol = 90 s !3! 389.6 S cm² mol- B. 174.8 S cm2 mol-1 180.8 S cm? mol-1 150. A S cm 2 mol-
A series of solutions was prepared with pH varying from 1 to 13. Each solution contained 2.0mg/L fluoride and had the same ionic strength and temperature. The response of a fluoride ion selective electrode in each solution was recorded relative to a reference electrode. A graph of Ecell versus pH will curve: A.downwards at pH < 4.0 due to H+ interference B.downwards at pH < 4.0 due to OH- interference C.upwards at pH < 4.0 due to H+ interference D.upwards at pH < 4.0 due to OH- interference
E (MV) (b) A fluoride ion selective electrode was used to analyse for fluoride as part of the QC procedures during the production of Listerine Fluoride Defense Anticavity Mouthwash. The mouthwash contains 0.02% sodium fluoride which is equivalent to 90 ppm of fluoride. The QC specification for the mouthwash is 90 ± 5 ppm of fluoride. During production three standards and six periodic samples were analysed each hour. The mouthwash samples were diluted 100 fold before the pH and ionic strength were adjusted using an appropriate TISAB before analysis. The following data was obtained for the standards and the calibration curve is shown below. Table 1. Solution E (MV) 1.00 x 10 M F 5.00 x 10-5 M F 40.5 60.2 1.00 x 10-5 M F 100.0 Figure 5. Continued... 120 -100 -80 -60 -40 -20 +o -3.5 -3.7 -3.9 -4.1 -4.3 -4.5 -4.7 -4.9 -5.1 -5.3 -5.5 Log [fluoride] (i) Six samples were analysed and the following potentials, measured in mV, were obtained; 58.9, 61.0, 60.7, 59.3, 59.6 and 61.7. Use this data…
Briefly explain the principle and application of potentiometry or pH meter or lon selective electrode.
I need the answer in Handwritten
Explain the reason for the peaked response of linear sweep voltammetry measurements with a planar electrode and a quiescent solution.
A polarogram with a dropping murcury electrode has a diffusion current of 18 microA. How much Zn2+ (in %) from 50.00 milliliters of 0.250mM solution is reduced during 2.8 minutes required to do the scan?
In a voitammogram, which of the following statements is correct a. The limiting current i is used for quantitative analysis b. The half-wave potential E/2 is used for quantitative analysis c. The limiting current i depends on the identity of the analyte d. The half-wave potential E1/2 dependens on the analyte concentration When 2.7 of naphthalene (C10H8) was burned in a bomb calorimeter at 317 K, the change in internal energy was 44 kJ. Calculate the molar enthalpy of combustion of naphthalene. in kJ/mol 2 a. 2080.8 b. 2086.1 C. 2096.6 d. 2094.0 e. 2083.4