Electrochemistry Flashcards
State the Nernst equation and define each term.
Discuss the mode of operation of the fluoride ion selective electrode.
Give details of how Cu²⁺, Zn²⁺, Cd²⁺ and Pb²⁺ can be determined simultaneously using the technique of anodic stripping voltammetry (ASV).
Give details of two reference electrodes used in routine electrochemical measurements.
What is the purpose of the following electrodes:
- Working electrode
- Reference electrode
- Auxiliary electrode
What is a galvanic cell?
What is an electrolytic cell?
Give an example of a galvanic cell.
Give an example of an electrolytic cell.
Explain how the blood glucose monitor determines the concentration of glucose in a blood sample.
Explain the principle of how the concentration of a redox-active substance is determined using the voltametric measurement system.
For the reaction: Cu²⁺ + Zn → Cu + Zn²⁺, state which species is oxidised and which is reduced.
Give the half-cell reactions for the redox reaction: Cu²⁺ + Zn → Cu + Zn²⁺.
Define oxidation in organic reactions.
Oxidation is the loss of protons in organic reactions.
Define reduction in organic reactions.
Reduction is the gain of protons in organic reactions.
State the measured parameter and the fixed parameters in:
- potentiometry
- voltammetry
- amperometry
Define reduction in inorganic reactions.
Reduction is the gain of electrons in inorganic reactions.
Define oxidation in inorganic reactions.
Oxidation is the loss of electrons in inorganic reactions.
Give an example of a forensically significant conductance measurement and
Give an example of a pharmaceutically significant conductance measurement, and indicate the conductivity of this sample.
Give an example of a pharmaceutically significant conductance measurement, and indicate the conductivity of this sample.
Explain how conductance measurements are obtained.
Explain what the conductance probe is
actually measuring.
Write the two half-reactions associated with this equation.
5Fe²⁺ + MnO₄⁻ + 8H⁺→ 5Fe³⁺ + Mn²⁺ + 4H₂O
