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Worksheet: Electrochemical Measurements

Q1:

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

  • ABridging
  • BOsmotic
  • CCoulombic
  • DJunction
  • EReference

Q2:

Which of the following is a static electrochemical technique?

  • AControlled-potential coulometry
  • BControlled-current coulometry
  • CCyclic voltammetry
  • DPotentiometry
  • EAmperometry

Q3:

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

  • ACurrent versus electrochemical potential
  • BElectrochemical potential versus time
  • CCurrent only
  • DCurrent versus time
  • EPotential only

Q4:

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
  • BSaturated calomel electrode
  • CSilver/silver chloride electrode
  • DMetallic electrode of the second kind
  • EReference electrode

Q5:

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

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

Q6:

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

  • AAmperometry
  • BHydrodynamic voltammetry
  • CPolarography
  • DStripping voltammetry
  • ECyclic voltammetry

Q7:

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

  • Asaturated calomel electrode
  • Bmetallic electrode of the second kind
  • Creference electrode
  • Dmetallic electrode of the first kind
  • Esilver/silver chloride electrode