Question 1

Consider the reaction 
 $$\begin{array} { l } 
M \stackrel { k _ { 1 } } { \longrightarrow } M _ { a ds} ^ { + } + e ^ { - } \
M _ { a ds } ^ { + } \stackrel { k _ { 2 } } { \longrightarrow } M _ { s o l } ^ { + }
\end{array}$$ . Frumkin isotherm is used to describe the adsorption. The kinetic parameter values are kS1U1B110S1U1B0 = 10S1U1P1-9 S1S1P0mol cmS1U1P1-2S1S1P0 sS1U1P1-1S1S1P0, bS1U1B11S1U1B0 = 10 VS1U1P1-1S1S1P0, g = 15, $\beta$S1U1B11S1U1B0 = -0.5 , kS1U1B120S1U1B0 = 10S1U1P1-8S1S1P0 mol cmS1U1P1-2S1S1P0 sS1U1P1-1S1S1P0, $\beta$S1U1B12S1U1B0 = +0.5 and $\varGamma$ = 10S1U1P1-8S1S1P0 mol cmS1U1P1-2S1S1P0.
-The maximum number of 'loops' that can appear in complex plane plots is _____________

Accepted Answer

The answer of Consider the reaction 
 \[\begin{array} { l...

Question 2

Consider the reaction $$\begin{array} { l } 
M \stackrel { k _ { 1 } } { \longrightarrow } M _ { a ds } ^ { + } + e ^ { - } \
M + M _ { a d s } ^ { + } \stackrel { k _ { 2 } } { \longrightarrow } M _ { a d s } ^ { + } + M _ { s o l } ^ { + } + e ^ { - } \
M _ { a d s } ^ { + } \stackrel { k _ { s } } { \longrightarrow } M _ { s o l } ^ { + }
\end{array}$$
-The mass balance equation for fractional surface coverage of $$M _ { a d s} ^ { + }$$ 
 is given by

Accepted Answer

A)  $$\Gamma \frac { d \theta } { d t } = k _ { 1 } ( 1 - \theta ) - k _ { 2 } \theta ( 1 - \theta ) + k _ { 3 } \theta$$ 
B)  $$\Gamma \frac { d \theta } { d t } = k _ { 1 } ( 1 - \theta ) - k _ { 2 } \theta ( 1 - \theta )$$ 
C)  $$\Gamma \frac { d \theta } { d t } = k _ { 1 } ( 1 - \theta ) - k _ { 2 } \theta ( 1 - \theta ) - k _ { 3 } \theta$$ 
D)  $$\Gamma \frac { d \theta } { d t } = k _ { 1 } ( 1 - \theta ) - k _ { 3 } \theta$$

Question 3

Consider the reaction $$\begin{array} { l } 
M \stackrel { k _ { 1 } } { \longrightarrow } M _ { a ds } ^ { + } + e ^ { - } \
M + M _ { a d s } ^ { + } \stackrel { k _ { 2 } } { \longrightarrow } M _ { a d s } ^ { + } + M _ { s o l } ^ { + } + e ^ { - } \
M _ { a d s } ^ { + } \stackrel { k _ { s } } { \longrightarrow } M _ { s o l } ^ { + }
\end{array}$$
-In the same reaction, the equation for fractional surface coverage of Aads is given by

Accepted Answer

A)  $$\frac { k _ { 1  { dc } } } { k _ { 1  { dc} } + k _ { 2 dc } + k _ { 3 {dc } } }$$ 
B)  $$\frac { k _ { 1 d c } } { k _ { 1 dc} + k _ { 3 d c } }$$ 
C)  $$\frac { k _ { 3  { dc } } } { k _ { 1 { dc } } + k _ { 2 d \dot { } } + k _ { 3 { dc } } }$$ 
D)  $$\frac { k _ { 3  { dc } } } { k _ { 1 {dc } } + k _ { 3 d c} }$$

Question 4

Consider the reaction given by $$\begin{array} { l } 
M \stackrel { k _ { 1 } } { \longrightarrow } M _ { ads } ^ { + } + e ^ { - } \
\
M _ { a d s} ^ { + } \frac { k _ { 2 } } { \longleftarrow k _ { - 2 } } M _ { s o l } ^ { 2 + } + e ^ { - }
\end{array}$$ .
-In the same mechanism, the faradaic impedance (ZF) is given by $$i _ { F } = F \left[ k _ { 1 } ( 1 - \theta ) + k _ { 2 } \theta - k _ { - 2 } ( 1 - \theta ) C _ { M _ { \mathbf { sol } } ^ { +2 } } \right]$$

Accepted Answer

A)  $$\left( Z _ { F } \right) ^ { - 1 } = F \left( b _ { 1 } k _ { 1 dc } \left( 1 - \theta _ { ss } \right) + b _ { 2 } k _ { 2 d { c } } \theta _ { ss } - b _ { - 2 } k _ { - 2 d c } C _ { M _ {sol } ^ { +2 } } \left( 1 - \theta _ { s s } \right) - \left( k _ { 1 d c } - k _ { 2 dc } + k _ { - 2 d c } C _ { M _ {sol} ^ {+ 2 } } \right) \frac { d \theta } { d E } \right)$$ 
B)  $$\left( Z _ { F } \right) ^ { - 1 } = F \left( b _ { 1 } k _ { 1 d c } \left( 1 - \theta _ { ss } \right) + b _ { 2 } k _ { 2 d { c } } \theta _ { ss } - b _ { - 2 } k _ { - 2 d c } C _ { M _ {sol } ^ { +2 } } \left( 1 - \theta _ { s s } \right) - \left( k _ { 1 d c } - k _ { 2 dc } + k _ { - 2 d c } C _ { M _ {sol} ^ {+ 2 } } \right) \frac { d \theta } { d E } \right)$$ 
C)  $$\left( Z _ { F } \right) ^ { - 1 } = F \left( b _ { 1 } k _ { 1 { dc } } \left( 1 - \theta _ { s s } \right) + b _ { 2 } k _ { 2 {dc } } \theta _ { ss } - \left( k _ { 1  { dc } } - k _ { 2 d { c } } + k _ { - 2  { dc } } C _ {  M^{+2} _ { { sol } } } \right) \frac { d \theta } { d E } \right)$$ 
D)  $$\left( Z _ { F } \right) ^ { - 1 } = F \left( b _ { 1 } k _ { 1 d c } \left( 1 - \theta _ { ss } \right) + b _ { 2 } k _ { 2 d { c } } \theta _ { ss } - b _ { - 2 } k _ { - 2 d c } C _ { M _ {sol } ^ { +2 } } \left( 1 - \theta _ { s s } \right) +\left( k _ { 1 d c } - k _ { 2 dc } + k _ { - 2 d c } C _ { M _ {sol} ^ {+ 2 } } \right) \frac { d \theta } { d E } \right)$$

Question 5

A Frumkin isotherm model will reduce to Langmuir isotherm when parameter "g" is _____

Accepted Answer

The answer of A Frumkin isotherm model will reduce to...

Question 6

In a kinetic limited electrochemical reaction, the number of loops appearing in the complex plane plot of EIS can be related to the

Accepted Answer

A)  number of steps in the mechanism 
B)  the number of reacting species 
C)  the number of product species 
D)  the number of adsorbed intermediates

Question 7

Consider the reaction $$\begin{array} { l } 
P _ { s o l }\underset { k _ { - 1 } } { \stackrel { k _ { 1 } } { \rightleftarrows } }Q _ { - s o l } + e ^ { - } \
A _ { s ol } ^ { - } \underset { k _ { - 2 } } { \stackrel { k _ { 2 } } { \rightleftarrows } } A _ { a d s } + e ^ { - } \
\end{array}$$

-In the same reaction, the expression for $$\frac { d \theta } { d E }$$ 
is given by

Accepted Answer

A)  $$\frac { d \theta } { d E } = \frac { b _ { 2 } k _ { 2dc } \left[ A _ { so l } ^ { - } \right] - b _ { - 2 } k _ { - 2 dc} } { k _ { 2 dc } \left[ A _ { s ol } ^ { - } \right] + k _ { - 2  { dc} } + j \omega \Gamma }$$ 
B)  $$\frac { d \theta } { d E } = \frac { b _ { 2 } k _ { 2 dc } \left[ A _ { s ol } ^ { - } \right] \left( 1 - \theta _ { ss } \right) - b _ { - 2 } k _ { - 2 dc } \theta _ { s s } } { k _ { 2 d c} \left[ A _ { so l } ^ { - } \right] \left( 1 - \theta _ { s s } \right) + k _ { - 2 dc } \theta _ { ss } + j \omega \Gamma }$$ 
C)  $$\frac { d \theta } { d E } = \frac { b _ { 2 } k _ { 2dc } \left[ A _ { s o l } ^ { - } \right] \left( 1 - \theta _ { s s } \right) - b _ { - 2 } k _ { - 2 dc } \theta _ { s s } } { k _ { 2 dc } \left[ A _ { s o l } ^ { - } \right] + k _ { - 2 dc } + j \omega \Gamma }$$ 
D)  $$\frac { d \theta } { d E } = \frac { b _ { 2 } k _ { 2 dc } \left[ A _ { s o l } ^ { - } \right] - b _ { - 2 } k _ { - 2 d c } } { k _ { 2 d \dot { } } \left[ A _ { s o l } ^ { - } \right] \left( 1 - \theta _ { s s } \right) + k _ { - 2 d c } \theta _ { s s} + j \omega \Gamma }$$

Question 8

Consider the reaction $$\begin{array} { l } 
P _ { s o l }\underset { k _ { - 1 } } { \stackrel { k _ { 1 } } { \rightleftarrows } }Q _ { - s o l } + e ^ { - } \
A _ { s ol } ^ { - } \underset { k _ { - 2 } } { \stackrel { k _ { 2 } } { \rightleftarrows } } A _ { a d s } + e ^ { - } \
\end{array}$$

-For the above mechanism, the number of electrical elements (including polarization resistance) required to model the Faradaic impedance is _____

Accepted Answer

The answer of Consider the reaction \[\begin{array} { l }...

Question 9

The polarization plot of an electrochemical system is given below.
 
-In the same system, if an impedance spectrum is acquired at Edc = 1.2 V vs. OCP, then the polarization resistance is expected to be.

Accepted Answer

A)  negative 
B)  positive 
C)  can be either negative or positive 
D)  zero.

Question 10

Consider the reaction $$\begin{array} { l } 
P _ { s o l }\underset { k _ { - 1 } } { \stackrel { k _ { 1 } } { \rightleftarrows } }Q _ { - s o l } + e ^ { - } \
A _ { s ol } ^ { - } \underset { k _ { - 2 } } { \stackrel { k _ { 2 } } { \rightleftarrows } } A _ { a d s } + e ^ { - } \
\end{array}$$

-In the same reaction, the equation for fractional surface coverage of Aads is given by

Accepted Answer

A)  $$\frac { k _ { 2 d c } \left[ A _ { s d } ^ { - } \right] } { k _ { 1 d \dot { k } } \left[ P _ { s o l } \right] - k _ { - 1 } \left[ Q _ { s o l } \right] + k _ { 2 d c } \left[ A _ { s o l } ^ { - } \right] + k _ { - 2 d c } }$$ 
B)  $$\frac { k _ { 1  { dc} } \left[ P _ { s o l } \right] + k _ { 2  {dc } } \left[ A _ { sol } ^ { - } \right] } { k _ { 1 { dc } } \left[ P _ { s o l ] } \right] - k _ { - 1 } \left[ Q _ { s o l } \right] k _ { 2   { dc } } \left[ A _ { s ol } ^ { - } \right] + k _ { - 2 { dc } } }$$ 
C)  $$\frac { k _ { 1 { dc } } \left[ P _ { s o l } \right] - k _ { - 1 } \left[ Q _ { s o l } \right] + k _ { 2{ dc } } \left[ A _ { s o l } ^ { - } \right] } { k _ { 1 \dot { k } } \left[ P _ { s o l } \right] - k _ { - 1 } \left[ Q _ { s o l } \right] + k _ { 2{dc } } \left[ A _ { s o l } ^ { - } \right] + k _ { - 2 { dc } } }$$ 
D)  $$\frac { k _ { 2dc } \left[ A _ { s o l } ^ { - } \right] } { k _ { 2 dc } \left[ A _ { s o l } ^ { - } \right] + k _ { - 2 dc } }$$

Question 11

The following impedance spectrum was obtained for an electrochemical system.
 Which of the following mechanisms can be considered to describe the electrochemical system?

Accepted Answer

A)  $$\begin{array} { l } 
M \stackrel { k _ { 1 } } { \longrightarrow } M _ { a ds } ^ { + } + e ^ { - } \
\
M _ { a ds } ^ { + } + M \stackrel { k _ { 2 } } { \longrightarrow } M _ { a ds } ^ { + } + M _ { s o l } ^ { 2 + } + 2 e ^ { - }
\end{array}$$ 
B)  $$\begin{array} { l } 
M \stackrel { x _ { 1 } } { \longrightarrow } M _ { ads } ^ { + } + e ^ { - } \
\
M + M _ { a d s } ^ { + } \stackrel { k _ { 2 } } { \longrightarrow } M _ { s d } ^ { 2 + } + M + e ^ { - }
\end{array}$$ 
C)  $$\begin{array} { l } 
M \stackrel { k } { \longrightarrow } M _ { a ds} ^ { + } + e ^ { - } \
\
M _ { ads } ^ { + } \stackrel { k _ { 3 } } { \longrightarrow } M _ { ad s } ^ { 2 + } + e ^ { - } \
\
M _ { ads } ^ { 2 + }  \stackrel { k _ { 3 } } { \longrightarrow } M _ { s o l } ^ { 2 + }
\end{array}$$ 
D)  $$\begin{array} { l } 
M \stackrel { k _ { 1 } } { \longrightarrow } M _ { a ds} ^ { + } + e ^ { - } \
\
M _ { a ds } ^ { + } \stackrel { k _ { 3 } } { \longrightarrow } M _ { s o l } ^ { 2 + } + e ^ { - } \
\
M \stackrel { k _ { 3 } } { \longrightarrow } M _ { so l } ^ { 2 + } + 2 e ^ { - }
\end{array}$$

Question 12

Consider an elementary reaction $M _ { s o l } ^ { 3 + }+ 3 e ^ { - }  \underset { k _ { - 1 } } { \stackrel { k _ { 1 } } { \rightleftarrows } } M  $

where M is a metal and 
 $$M _ { s o l } ^ { 3 + }$$ 
 is metal ion in solution. F denotes faraday constant. The net faradaic current density due to metal deposition is given by

Accepted Answer

A)  $$F k _ { 1 } \left[ M _ { s o l } ^ { 3 + } \right]$$ 
B)  $$F \left\{ k _ { 1 } \left[ M _ { s a l } ^ { 3 + } \right] - k _ { - 1 } \right\}$$ 
C)  $$3 F \left( k _ { 1 } \left[ M _ { s o l } ^ { 3 + } \right] + k _ { - 1 } \right)$$ 
D)  $$3 F \left\{ k _ { 1 } \left[ M _ { s a l } ^ { 3 + } \right] - k _ { - 1 } \right\}$$

Question 13

Temkin model describes the relationship between _______ and fractional surface coverage

Accepted Answer

A)  rate constant 
B)  equilibrium constant 
C)  potential 
D)  current

Question 14

Consider a reaction given by $\begin{array} { l } 
M \underset { k _ { - 1 } } { \stackrel { k _ { 1 } } { \rightleftarrows } } M _ { a ds } ^ { + } + e ^ { - } \
M _ { a d s } ^ { + }\underset { k _ { - 2 } } { \stackrel { k _ { 2 } } { \rightleftarrows } } M _ { sol } ^ { + }
\end{array}$ .
-In the same mechanism, the value of $$\frac { d \theta } { d E }$$ 
is given by

Accepted Answer

A)  $\frac{\left(b_{1} k_{1 ak}\left(1-\theta_{s s}\right)-b_{-1} k_{-1ak} \theta_{ss}\right)}{\left(k_{1 dak}+k_{-1 ak}+k_{2}+k_{-2} C_{M_{2a}^{2}}+j \omega \Gamma\right)}$ 
B)  $$\frac { \left( b _ { 1 } k _ { 1 \dot {dc } } - b _ { - 1 } k _ { - 1 \dot {dc } } \right) } { \left( k _ { 1 \dot { dc} } + k _ { - 1 \dot { dc } } + k _ { 2 } + k _ { - 2 } + j \omega \Gamma \right) }$$ 
C)  $$\frac { \left( b _ { 1 } k _ { 1 \dot { d } } - b _ { - 1 } k _ { - 1 \dot { \alpha } } \right) } { \left( k _ { 1 \dot { \alpha } } + k _ { - 1 \dot { k } } + k _ { 2 } + j \Gamma \Gamma \right) }$$ 
D)  $$\frac { \left( b _ { 1 } k _ { 1 \dot { dc } } \right) } { \left( k _ { 1 \dot { dc} } + k _ { - 1 \dot { dc } } + k _ { 2 } + j \omega \Gamma \right) }$$

Question 15

Consider the reaction $$\begin{array} { l } 
P _ { s a } \stackrel { k _ { 1 } } { \longrightarrow } Q _ { s a } + e ^ { - } \
A _ { s i l } ^ { - } \underset { k _ { - 2 } } { \stackrel { k _ { 2 } } { \rightleftarrows } } A _ { \alpha i j } + e ^ { - } \
\end{array}$$ 
 The kinetic parameters are given by kS1U1B110S1U1B0 = 10S1U1P1-5 S1S1P0cm sS1U1P1-1S1S1P0, bS1U1B11S1U1B0 = 20 VS1U1P1-1S1S1P0, kS1U1B120S1U1B0 = 10S1U1P1-6S1S1P0 cm sS1U1P1-1S1S1P0, bS1U1B12S1U1B0 = 20 VS1U1P1-1S1S1P0, kS1U1B1-20S1U1B0 =10S1U1P1-6S1S1P0 mol cmS1U1P1-2S1S1P0 sS1U1P1-1S1S1P0 , bS1U1B1-2S1U1B0 = -18 VS1U1P1-1S1S1P0 and $\varGamma$ = 10S1U1P1-8S1S1P0 mol cmS1U1P1-2S1S1P0. Solution species concentrations are given by [PS1U1B1solS1U1B0] = [QS1U1B1solS1U1B0] =[
 $$A _ { s o l } ^ { - }$$ ] = 100 mM.
-The equation for fractional surface coverage of Aads is given by

Accepted Answer

A)  $$\frac { k _ { 2 \dot { dc } } } { k _ { 2 k \dot { dc } } + k _ { - 2 \dot { dc } } + k _ { 1 \dot { dc } } }$$ 
B)  $$\frac { k _ { 2 dc } } { k _ { 2dc } + k _ { - 2 \dot {dc } } }$$ 
C)  $\frac{k_{2 dc} C_{\mathcal{A}^-_{\mathrm{sol}}}}{k_{2 dc} C_{A^-_{sol}}+k_{-2 d c}+k_{1 d c} C_{P_{sol}}}$ 
D)  $\frac{k_{2 dc} C_{A^-_{sol}}}{k_{2 dc} C_{A^-_{sol}}+k_{-2dc}}$

Question 16

Consider the reaction 
 $$\begin{array} { l } 
M \underset { k _ { - 1 } } { \stackrel { k _ { 1 } } { \rightleftarrows } } M _ { a ds } ^ { + } + e ^ { - } \
M _ { a ds } ^ { + } + M  \stackrel { k _ {2 } } { \longrightarrow } M _ { ads} ^ { + }  +M _ { sol } ^ { + } + e ^ { - }
\end{array}$$
 
The kinetic parameters are given by kS1U1B110S1U1B0 = 10S1U1P1-S1S1P0S1U1P19S1S1P0S1U1P1 S1S1P0mol cmS1U1P1-2S1S1P0 sS1U1P1-1S1S1P0, bS1U1B11S1U1B0 = 10 VS1U1P1-1S1S1P0, kS1U1B1-1S1U1B0S1U1B10S1U1B0 = 10S1U1P1-S1S1P0S1U1P18S1S1P0 mol cmS1U1P1-S1S1P0S1U1P12S1S1P0 sS1U1P1-1S1S1P0, bS1U1B1-1S1U1B0 = -10 VS1U1P1-1S1S1P0, kS1U1B120S1U1B0 = 10S1U1P1-8S1S1P0 mol cmS1U1P1-2S1S1P0 sS1U1P1-1S1S1P0, bS1U1B12S1U1B0 = 10 VS1U1P1-1S1S1P0 and$\varGamma$ = 10S1U1P1-8S1S1P0 mol cmS1U1P1-2S1S1P0.
-To model a system with the above mechanism, the minimum number of dc potentials at which EIS data should be taken to avoid an infinite number of solutions is __________

Accepted Answer

The answer of Consider the reaction 
 \[\begin{array} { l...

Question 17

Choose the mechanism(s), which, for appropriate values of kinetic parameters and dc potentials, can yield negative differential impedance.

Accepted Answer

A)  $$\begin{array} { l } 
M \rightarrow M _ { a ds } ^ { + } + e ^ { - } \
\
M _ { a ds } ^ { + } \rightarrow M _ { a d s } ^ { 2 + } + e ^ { - } \
\
M _ { a d s } ^ { + } \rightarrow M _ { s o l } ^ { 2 + }
\end{array}$$ 
B)  $$M \rightarrow M _ { s o l } ^ { + } + e ^ { - }$$ 
C)  $$\begin{array} { l } 
M \rightarrow M _ { a d s } ^ { + } + e ^ { - } \
\
M _ { a ds } ^ { + } \rightarrow M _ { \text {sol } } ^ { 2 + } + e ^ { - }
\end{array}$$ 
D)  $$\begin{array} { l } 
M \rightarrow M _ { a ds } ^ { + } + e ^ { - } \
\
M _ { a d s } ^ { + } + M ^ {  } \rightarrow M _ { a d s } ^ { + } + M _ { s o l } ^ { + }
\end{array}$$

Question 18

Consider the reaction $$\begin{array} { l } 
M \stackrel { k _ { 1 } } { \longrightarrow } M _ { a ds } ^ { + } + e ^ { - } \
M + M _ { a d s } ^ { + } \stackrel { k _ { 2 } } { \longrightarrow } M _ { a d s } ^ { + } + M _ { s o l } ^ { + } + e ^ { - } \
M _ { a d s } ^ { + } \stackrel { k _ { s } } { \longrightarrow } M _ { s o l } ^ { + }
\end{array}$$
-In the same reaction, the expression for $$\frac { d \theta } { d E }$$ 
is given by

Accepted Answer

A)  $$\frac { d \theta } { d E } = \frac { b _ { 1 } k _ { 1 d c } \left( 1 - \theta _ { s s } \right) - b _ { 2 } k _ { 2 { dc } } \theta _ { ss } \left( 1 - \theta _ { s s } \right) } { k _ { 1  { dc } } + k _ { 2 d c} + j \omega \Gamma }$$ 
B)  $$\frac { d \theta } { d E } = \frac { b _ { 1 } k _ { 1 dc } \left( 1 - \theta _ { s s } \right) - b _ { 2 } k _ { 2 { dc } } \theta _ { ss } \left( 1 - \theta _ { s s } \right) } { k _ { 1 dc } + k _ { 2 d c} + k _ { 3 } + j \omega \Gamma }$$ 
C)  $$\frac { d \theta } { d E } = \frac { b _ { 1 } k _ { 1 dc } \left( 1 - \theta _ { ss} \right) } { k _ { 1dc } + k _ { 3 } + j \omega \Gamma }$$ 
D)  $$\frac { d \theta } { d E } = \frac { b _ { 1 } k _ { 1 dc } \left( 1 - \theta _ { s s } \right) - b _ { 2 } k _ { 2 dc } \theta _ { s s } } { k _ { 1 dc } + k _ { 2 dc } + k _ { 3 } + j \omega \Gamma }$$

Question 19

Consider the reaction $$\begin{array} { l } 
M \stackrel { k _ { 1 } } { \longrightarrow } M _ { a ds } ^ { + } + e ^ { - } \
M + M _ { a d s } ^ { + } \stackrel { k _ { 2 } } { \longrightarrow } M _ { a d s } ^ { + } + M _ { s o l } ^ { + } + e ^ { - } \
M _ { a d s } ^ { + } \stackrel { k _ { s } } { \longrightarrow } M _ { s o l } ^ { + }
\end{array}$$
-In the same reaction, the faradaic current is given by

Accepted Answer

A)  $$i _ { F } = F \left\{ k _ { 1 } ( 1 - \theta ) + k _ { 2 } \theta ( 1 - \theta ) \right\}$$ 
B)  $$i _ { F } = F \left\{ k _ { 1 } ( 1 - \theta ) + k _ { 2 } \theta ( 1 - \theta ) + k _ { 3 } \theta \right\}$$ 
C)  $$i _ { F } = F \left\{ k _ { 1 } ( 1 - \theta ) - k _ { 2 } \theta ( 1 - \theta ) - k _ { 3 } \theta \right\}$$ 
D)  $$i _ { F } = F \left\{ k _ { 1 } ( 1 - \theta ) - k _ { 3 } \theta \right\}$$

Question 20

Consider the reaction $$\begin{array} { l } P _ { s a } \stackrel { k _ { 1 } } { \longrightarrow } Q _ { s a } + e ^ { - } \ A _ { s i l } ^ { - } \underset { k _ { - 2 } } { \stackrel { k _ { 2 } } { \rightleftarrows } } A _ { \alpha i j } + e ^ { - } \ \end{array}$$ The kinetic parameters are given by kS1U1B110S1U1B0 = 10S1U1P1-5 S1S1P0cm sS1U1P1-1S1S1P0, bS1U1B11S1U1B0 = 20 VS1U1P1-1S1S1P0, kS1U1B120S1U1B0 = 10S1U1P1-6S1S1P0 cm sS1U1P1-1S1S1P0, bS1U1B12S1U1B0 = 20 VS1U1P1-1S1S1P0, kS1U1B1-20S1U1B0 =10S1U1P1-6S1S1P0 mol cmS1U1P1-2S1S1P0 sS1U1P1-1S1S1P0 , bS1U1B1-2S1U1B0 = -18 VS1U1P1-1S1S1P0 and $\varGamma$ = 10S1U1P1-8S1S1P0 mol cmS1U1P1-2S1S1P0. Solution species concentrations are given by [PS1U1B1solS1U1B0] = [QS1U1B1solS1U1B0] =[ $$A _ { s o l } ^ { - }$$ ] = 100 mM. -At E_dc = 0.25 V vs. OCP, the value of fractional surface coverage of A_ads is given by, $\theta$_ss = _________

Accepted Answer

The answer of Consider the reaction \[\begin{array} { l }...

Exam 5: Mechanistic Analysis

A Frumkin isotherm model will reduce to Langmuir isotherm when parameter "g" is _____

In a kinetic limited electrochemical reaction, the number of loops appearing in the complex plane plot of EIS can be related to the

The polarization plot of an electrochemical system is given below. -In the same system, if an impedance spectrum is acquired at E_dc = 1.2 V vs. OCP, then the polarization resistance is expected to be.

Temkin model describes the relationship between _______ and fractional surface coverage

Choose the mechanism(s) , which, for appropriate values of kinetic parameters and dc potentials, can yield negative differential impedance.

Exam 5: Mechanistic Analysis

A Frumkin isotherm model will reduce to Langmuir isotherm when parameter "g" is _____

In a kinetic limited electrochemical reaction, the number of loops appearing in the complex plane plot of EIS can be related to the

The polarization plot of an electrochemical system is given below. -In the same system, if an impedance spectrum is acquired at Edc = 1.2 V vs. OCP, then the polarization resistance is expected to be.

The following impedance spectrum was obtained for an electrochemical system. Which of the following mechanisms can be considered to describe the electrochemical system?

Temkin model describes the relationship between _______ and fractional surface coverage

Choose the mechanism(s) , which, for appropriate values of kinetic parameters and dc potentials, can yield negative differential impedance.

The polarization plot of an electrochemical system is given below. -In the same system, if an impedance spectrum is acquired at E_dc = 1.2 V vs. OCP, then the polarization resistance is expected to be.