Worksheet: Electrochemical Measurements

In this worksheet, we will practice describing electrochemical procedures such as electroplating, coulometry, and cyclic voltammetry.

Q1:

Cd wire used to measure the concentration of cadmium ions is an example of a .

  • Asilver/silver chloride electrode
  • Bmetallic electrode of the second kind
  • Cmetallic electrode of the first kind
  • Dsaturated calomel electrode
  • Ereference electrode

Q2:

One electrochemical technique involves first depositing an analyte on the surface of an electrode and then using an applied current to remove the analyte via a reduction or oxidation reaction. What is this method called?

  • AAmperometry
  • BCyclic voltammetry
  • CStripping voltammetry
  • DHydrodynamic voltammetry
  • EPolarography

Q3:

Which term best describes a silver wire that is used to measure the concentration of bromide ions in an aqueous solution?

  • AMetallic electrode of the first kind
  • BReference electrode
  • CSaturated calomel electrode
  • DSilver/silver chloride electrode
  • EMetallic electrode of the second kind

Q4:

What name is given to the potential that develops at the interface of two solutions due to differences in concentration and ionic mobility?

  • AJunction
  • BOsmotic
  • CBridging
  • DCoulombic
  • EReference

Q5:

Fill in the blank: Coulometric techniques result in a plot of .

  • Apotential only
  • Bcurrent only
  • Ccurrent versus electrochemical potential
  • Dcurrent versus time
  • Eelectrochemical potential versus time

Q6:

Which of the following statements about the standard hydrogen electrode, the calomel electrode, and the silver/silver chloride electrode is true?

  • AThese electrodes have the same electrochemical potential.
  • BThese electrodes are typically used as reference electrodes.
  • CThese electrodes are examples of membrane electrodes.
  • DThese electrodes are typically used as working (indicator) electrodes.
  • EThese electrodes combine to make a complete electrochemical cell.

Q7:

Which of the following is a static electrochemical technique?

  • AControlled-current coulometry
  • BAmperometry
  • CControlled-potential coulometry
  • DPotentiometry
  • ECyclic voltammetry

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