Question 1

Even if there is no reaction at a particular condition in a given system, second harmonics can arise if the double-layer is described by
A) Helmholtz model
B) Gouy-Chapman model
C) Stern model
D) none of the above

Accepted Answer

The answer of Even if there is no reaction at...

Question 2

Corrosion current can be obtained using
A) Tafel extrapolation
B) EIS
C) Electrochemical Frequency Modulation
D) Linear Polarization

Accepted Answer

The answer of Corrosion current can be obtained using
A) Tafel...

Question 3

Polarization resistance can be obtained from
A) Cyclic voltammetry
B) EIS
C) chrono amperometry
D) Linear Polarization

Accepted Answer

Polarization resistance can be obtained from Electrochemical Impedance Spectroscopy (EIS) and Linear Polarization techniques, as both methods are used to analyze the resistance to corrosion in electrochemical systems.

Question 4

Using potentiodynamic polarization data, the nonlinear polarization resistance can be estimated.

Accepted Answer

The nonlinear polarization resistance can indeed be estimated using potentiodynamic polarization data, which involves measuring the voltage-current response of an electrochemical cell as a function of applied potential or current. The resulting polarization curve can be analyzed to extract information about the corrosion kinetics, including the nonlinear polarization resistance, which is a measure of the electrode reactions at high current densities.

Question 5

Total harmonic distortion is calculated using
A) magnitude and phase at fundamental and higher harmonics
B) magnitude of fundamental and higher harmonics
C) magnitude and phase of higher harmonics only
D) magnitude of higher harmonics only

Accepted Answer

Total harmonic distortion (THD) is calculated using the magnitude of the fundamental frequency and the magnitudes of the higher harmonics. It is a measure of the distortion present in a signal due to harmonics.

Question 6

Charge transfer resistance can be obtained from
A) Cyclic voltammetry
B) EIS
C) chronoamperometry
D) Linear Polarization

Accepted Answer

EIS (Electrochemical Impedance Spectroscopy) is the best choice for obtaining charge transfer resistance. It is a powerful technique that provides information about the electrochemical system's behavior under different conditions, including the charge transfer resistance. It measures the impedance of the system as a function of the applied frequency, which allows for the calculation of the charge transfer resistance. Cyclic voltammetry (A) is a technique that measures the current response of an electrochemical system to an applied potential. Chronoamperometry (C) measures the current response of an electrochemical system to a constant potential. Linear Polarization (D) measures the current response of an electrochemical system to a small potential perturbation, which is used to extract information about the corrosion rate and corrosion potential. However, EIS is the best technique for obtaining charge transfer resistance.

Question 7

Standard Tafel extrapolation assumes that the contribution of ______________ resistance to the measured current is negligible. (one word)

Accepted Answer

The answer of Standard Tafel extrapolation assumes that the contribution...

Quiz 8: Nonlinear Eis

Even if there is no reaction at a particular condition in a given system, second harmonics can arise if the double-layer is described by

Corrosion current can be obtained using

Polarization resistance can be obtained from

Using potentiodynamic polarization data, the nonlinear polarization resistance can be estimated.

Total harmonic distortion is calculated using

Charge transfer resistance can be obtained from

Standard Tafel extrapolation assumes that the contribution of ______________ resistance to the measured current is negligible. (one word)