Solve 3 please ### Educational Content on Electrochemistry**Question 2:** In cyclic voltammetry, the effect of increasing the potential sweep rate, $dE/dt$ (where $t$ is time), is to:- a. increase the current density.- b. increase the rate of the corresponding oxidation/reduction process.- c. increase the charge transfer resistance.- d. all of the above.**Question 3:** A steel plate of area 100 cm$^2$ is undergoing a corrosion process resulting in a weight change of 2.89 x 10$^-5$ gm/s. The equivalent current density associated with this process is:- a. 10 mA/cm$^2$- b. 1 mA/cm$^2$- c. 100 mA/cm$^2$- d. 0.10 mA/cm$^2$**Question 4:** The thermodynamics of a passivation process can be examined using:- a. mixed potential theory or Evan’s diagrams.- b. Potential-pH or Pourbaix diagrams.- c. linear sweep voltammetry.- d. the electrochemical series of reduction potentials.**Question 5:** Consider the electrochemical cell: Cu/10$^-4$ M Cu$^{2+}$, 1M H$^+$/Pt/H$_2$ (activity = 1). Determine the equilibrium potential versus the indicated reference electrode.- a. 0.342 V- b. 0.082 V- c. 0.222 V- d. 0.462 V

Answered: 3. A steel plate of area 100 cm² steel…

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter21: Potentiometry

Section: Chapter Questions

Problem 21.16QAP

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Step 1: step 1 of 2

To calculate the equivalent current density associated with this process, we can use the following equation:

$C u r r e n t d e n s i t y (m A / c m ²) = (W e i g h t c h a n g e (g / s)) / (M o l a r m a s s (g / m o l) * N u m b e r o f e l e c t r o n s t r a n s f e r r e d (m o l / e l e c t r o n) * F a r a d a y c o n s t a n t (C / m o l * e l e c t r o n))$