4. Using the Randles-Sevcik equation, calculate the diffusion coefficient for a 1.005x10 3M solution of a reactant undergoing a 2 electron oxidation at a gold electrode with a 3.03 mm diameter at a scan rate of 0.250 V/s that produces 1.00A current.

4. Using the Randles-Sevcik equation, calculate the diffusion coefficient for a 1.005x10 3M solution of a reactant undergoing a 2 electron oxidation at a gold electrode with a 3.03 mm diameter at a scan rate of 0.250 V/s that produces 1.00A current.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter21: Potentiometry

Section: Chapter Questions

Problem 21.28QAP

See similar textbooks

Related questions

Q: calculated the following constants for the Aplysia giant cell: [Na*]o = 337 mM [Na*] = 50 mM [Na']…

A: The extracellular concentration of Na+, K+ and Cl- is 337 mM, 6 mM and 340 mM, respectively. The…

Q: In a certain conductivity cell, the resistance of a 0.01 M KCl solution is 150 W. The known molar…

A: Interpretation - To determine the cell constant (Kcell unit is cm-1) when in a certain conductivity…

Q: An unknown cadmium(II) solution was analyzed. A 25.00-mL sample of the unknown solution produced a…

A: A) The method is based on the fact that the diffusion current is proportional to the analyte…

Q: Cyclic Voltammogram of 10mM Ruthenium Hexamine 40 20 -20 -40 -60 -0.4 -0.2 0.0 0.2 potential (V) The…

Q: A) Compare the advantages and disadvantages of atomic absorption and inductively coupled plasma…

A: Since you have posted multiple questions, and have not specified which question you want us to…

Q: An unknown amount of copper(II) ions produces a faradic current of 12.3 A on a normal pulse…

Q: Use the data in Table 25.6 in ATKINS for the exchange current density and transfer coefficient for…

A: Given: Reaction on Nickel at 25oC 2 H+ + 2e- → H2 Overpotential = 0.20 V To determine Current…

Q: The potential difference between a potassium ion and saturated calomel electrode immersed in 100.0…

Q: The transfer coefficient of a certain electrode in contact with M2+ and M3+ in aqueous solution at…

A: The relation between the current density and the overpotential, when the overpotential is 105 mV or…

Q: An analyst wants to find out the active surface of his electrode before conducting his analyzes. To…

A: Solution Surface electrodes square measure sorts of electrodes applied to the skin of the topic.…

Q: lithium ion-selective electrode gave the potentials given below for the following standard solutions…

A: Solution -

Q: The conductivity of a 0.100 moldm-3 KCl solution at 25oC is 1.289 Scm-1. What is the resistance and…

A: Concentration of KCl solution (C) = 0.100 mol / dm-3 Conductivity of solution (κ) = 1.289 S cm-1…

Q: Calculate the moderating power and ratio for pure D:0 as well as for D:0 contaminated with 1% H;0.

A: Moderation is the process of slowing neutrons in a nuclear reactor so that they can easily promote…

Q: Which is not an error associated with an incorrectly defined pH measurement? A) contact potential…

A: An error associated with an incorrectly defined pH measurement has to be given,

Q: Find out the density of Copper? Criven Conher by arjestatting in face-Centered cubiic celts. if the…

A: We have to predict the density of the cubic cell.

Q: Calculate the effect that increasing the overpotential from 0.50 V to 0.60 V has on the current…

A: From Butler-Volmer equation, at large overpotential, the ratio of current densities (j1/j2) at two…

Q: 5- Resistance of the 0.05 M solution placed between two Pt electrodes having surface area 10 cm' at…

A: Concentration = 0.05 M Surface area(A) = 10 cm2 Length (l) = 1.5 cm Resistance (R) = 50 ohm

Q: .A conductance cell filled with 0.01 M solution of an electrolyte offered a resistance of 2300 ohms.…

A: To solve this problem first we have to calculate the specific conductance (K) and then we will…

Q: Explain clearly the reason for the peaked response of linear sweep voltammetry experiments involving…

A: The electrodes contain two electrodes such as "anode and cathode". Any species depicting capacity to…

Q: 0.5M HA electrolyte with a degree of dissociation of 0.2; It is placed in a conductivity cell with a…

A: Given: Concentration of weak electrolyte = 0.5 M Length = 0.9 cm Area = 2cm2

Q: Osmotic pressure of the gold sol with concentration of 4 g/l at 293 K is 8 Pa. Calculate the…

A: Osmotic pressure is given as: π=cRT where, c is the molar concentration of the solution

Q: How long will it take to dissolve 2 mg of metal A (atomic weight 100) in a solution containing A2+…

A: Given: mass of metal A= 2 mg Atomic weight =100 Overpotential (η) = 0.2 V Exchange current density =…

Q: The resistance of a decinormal solution of a salt occupying a volume between Pt electrodes is 1.80…

A: Normality of solution = 0.1 N Distance between electrode(l) = 1.80 cm Cross section area of…

Q: 4.In a certain conductivity cell, the resistance of a 0.01 M KCl solution is 150 Ω. The known molar…

A: Molar conductance(G) and specific conductance(k) of any solution is related as, Specific conductance…

Q: Explain and draw diagrams to describe the cyclic voltammetry response of a 500 nm thick…

A: A CV system consists of an electrolysis cell, a potentiostat, a current-to-voltage converter, and a…

Q: The resistance of decinormal solution of a salt occupying a volume between two platinum electrodes…

A: Given data : Normality =0.1N (Decinormal solution) Resistance = 32 ohms Area= 5.4 cm2 Length= 1.80…

Q: The typical distribution of K+ and Na+ ions inside and outside the cell is: [K+]in = 150 mM;…

A: At rest, the ratio of PNa/PK is determined as shown by equation (1). V=61.5…

Q: 1. what is the governing pricniple of voltammetry and how it relates to Nernst equation?

A: According to Q&A guidelines of Bartleby, we are supposed to answer only one question out of…

Q: 1) Suppose that cyclic voltammetry is carried out for one-electron reduction of a species, O, with a…

A: The approprite equation for the above discussion is Randles-sevcik equation.

Q: 1. Caleulate th equilibrium constant at 2s E For thereaction: 2H"+ " + Dacg) = Hzegs2D From the…

A: GIVEN:-

Q: An unknown cadmium(II) solution was analyzed polarographically by the method of standard additions.…

A: Polarography is a voltammetric technique in which chemical species undergo oxidation or reduction…

Q: A solution containing 4.48 ppm KMnO4 exhibits 85.9 %T in a 1.00-cm cell at 520 nm. Calculate the…

Q: following available on the polarization curve of the active- surface TAEFL alloy M-metal. If Q1/ The…

A: Technique of cathodic protection:- This electrochemical technique is used to to reduce the…

Q: A conductivity cell when standardized with 0.01 M KCI was found to have a resistance (R) of 189 N at…

A: Given: Concentration of KCl solution = 0.01 M Resistance of KCl cell = 189 Ω Concentration of NH4OH…

Q: Determine the matrix used to prepare solution of ferricyanide in cyclic voltammetry. Choices: AgCl,…

A: Cyclic voltammetry is the electrochemical technique which is used to measure the current response of…

Q: ion-selective electrode was immersed in standard solutions whose ionic strength was constant at 2.0…

A: Answer - (a) According to the question - Given -

Q: Why are stemless funnels preffered for hot filtirations?

A: We should use stemless funnels during hot filtration's.

Q: 4. A conductivity cell was calibrated with 0.02 M KCl solution (K = 0.002768 S cm-1) and the…

A: Cell constant for any cell can by dividing the length of the conductor with the area of its cross…

Q: what is the difference between linear voltammetry, cyclic voltammetry and differential anodic…

A: Voltammetry is an electroanalytical technique where the information about an analyte is obtained by…

Q: A conductivity cell was calibrated using 0.01 M KCl (κ = 1.4087x10-3 S/cm) and the measured…

Q: A standard addition method for the voltammetric determination of Pb2+ involved addition of 5.00 mL…

Q: The diffusion current in a polarogram for reduction of Cd2+at a mercury electrode is 12.0 mA. If the…

A: The time is given in minutes. Firstly, convert the minutes into seconds by multiplying the time by…

Q: Explain the reason for the peaked response of linear sweep voltammetry measurements with a planar…

A: The method by which the current at the working electrode is measured when the potential between the…

Q: What is the purpose of adding the KSCN near the end of the unknown analysis of copper using indirect…

A: Q- What is the purpose of adding the KSCN near the end of the unknown analysis of copper using…

Q: A polarogram with a dropping murcury electrode has a diffusion current of 18 microA. How much Zn2+…

A: Given:Diffusion current=18 microAVolume=50.00 millilitres of 0.250 mMTime=2.8 min

Question

4. Using the Randles-Sevcik equation, calculate the diffusion coefficient for a 1.005x10
M solution of a reactant undergoing a 2 electron oxidation at a gold electrode with
a 3.03 mm diameter at a scan rate of 0.250 V/s that produces 1.00A current.
D
m/s

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

An ion selective electrode is utilised to determine the concentration of Ca2+ in the presence of Mg2+. The selectivity coefficient for the electrode kij is 0.015. If the concentrations of Ca2+ and Mg2+ are 50 and 500 ppm, respectively, calculate the change in potential (in mV) when the temperature of the measurement cell is increased from 20oC to 40oC.
An unknown cadmium(II) solution was analyzed. A 25.00-mL sample of the unknown solution produced a diffusion current of 1.86 mA. Following addition of a 5.00-mL aliquot of 0.00212 M Cd2+ standard solution to the unknown solution, a diffusion current of 5.27 mA was produced. A) What type of electroanalytical method was used? B) What type of calibration method was used? C) What is the molar concentration of Cd2+ in the unknown 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?
A conductivity cell was calibrated using 0.01 M KCl (κ = 1.4087x10-3 S/cm) and the measured resistance was 688 Ω. a. Determine the cell constant (include units). b. Determine the molar conductivity, Λm for a 0.0100 M AgNO3 solution in the same cell with a resistance reading of 777Ω.
An unknown cadmium(II) solution was analyzed polarographically by the method of standard additions. A 25.00-mL sample of the unknown solution produced a diffusion current of 1.86 mA. Following addition of a 5.00-mL aliquot of 2.12x10^23 M Cd2+ standard solution to the unknown solution, a diffusion current of 5.27 mA was produced. Calculate the concentration of Cd2+ in the unknown solution.
What Range of cathode potentials versus the saturated calomel electrode can be used to quantitatively separate Ag+ and Ni2+ by electrolytic deposition? Assume that the sample solution is initially 0.1000M in each ion and the quantitative removal of an ion is realized when only 1 part in 10000 remains undeposited. ESCE = 0.244V E0Red (Ag+) = 0.8V E0Oxid (Ni) = -0.25V
1) Name the applications of glass electrodes in potentiometric measurements (please write correctly and concisely).
The typical distribution of K+ and Na+ ions inside and outside the cell is: [K+]in = 150 mM; [K+]out = 5 mM; [Na+]in = 10 mM; [Na+]out = 150 mM What should be the ratios of PNa/PK at (i) rest (-60 mV) and (ii) during the action potential (+20 mV) to generate a spike from -60 to +20 mV. Use the short form of Goldman equation.
The 0.1 M model with a resistance of 0.33 ohms shows a limit equivalent conductivity of 320 Scm-2mol-1 and a conductivity of 0.55. Seeing in this way; a) Equivalence Gap 1. Fill in the blanks, read the corresponding arrow. Blank 2. Fill in the blanks, read the relevant. b) Self-conductivity Gap 3. Fill in the blanks, read corresponding arrow. Blank 4. Fill in the blanks, read the relevant. c) Find the cell constant of the electrode used.
By employing a given conductivity cell with 0.1N potassium chloride at 18pC, an observed conductance of 0.025 mho was obtained. What is the cell constant if the specific conductance of KCL at 18°C is 0.0112 mho.
The voltammogram for 20.00 mL of solution that was 3.65 x 10-3M in Cd2+ gave a wave for that ion with a limiting current of 31.3 A. Calculate the percentage change in concentration of the solution if the current in the limiting current region were allowed to continue for a) 5 min; b) 10 min and c) 30 min.
A conductivity cell filled with a 0.01 M KCl solution was found to have a resistance of 189 ohms at 25oC. When filled with 0.01 M HCl solution, the cell gave a resistance of 64.8 ohms at the same temperature. At 25oC, the conductivity of 0.01 M KCl solution was 1.4088 x 10-3 S cm-1. Calculate (a) the cell constant and (b) the conductivity of the HCl solution. answer is [0.266; 4.105 x 10-3] please explain. thank you!