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Reference Electrodes definitions

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  • Silver-Silver Chloride Electrode
    A reference device using silver wire, silver chloride, and potassium chloride, known for stable potential and versatility in electrochemical measurements.
  • Calomel Electrode
    A reference device based on mercury(I) chloride and mercury, often with saturated potassium chloride, valued for ease of use and preparation.
  • Reference Electrode
    A stable half-cell used to provide a constant potential against which other electrode potentials are measured.
  • Standard Cell Potential
    The voltage measured under standard conditions when the activity of ions approaches unity, serving as a reference value.
  • Chloride Ion Activity
    A measure combining concentration and activity coefficient of chloride ions, crucial for determining electrode potential.
  • Potassium Chloride
    A salt used to maintain ionic strength and provide chloride ions in reference electrodes, affecting their voltage.
  • Redox Couple
    A pair of chemical species involved in electron transfer, such as silver/silver chloride or mercury/mercury(I) chloride.
  • Salt Bridge
    A component allowing ionic conduction between half-cells while preventing mixing of different solutions.
  • Porous Plug
    A barrier in reference electrodes that permits ion flow but restricts bulk mixing of solutions.
  • Indicator Electrode
    An electrode whose potential is measured relative to a reference to determine analyte concentration.
  • Nernst Equation
    A mathematical relationship describing how electrode potential depends on ion activity and temperature.
  • Phase Boundary
    The interface between different physical states, such as solid and liquid, within an electrochemical cell.
  • Saturated Solution
    A solution containing the maximum amount of dissolved solute, often used to stabilize reference electrode potential.
  • Activity Coefficient
    A factor correcting for non-ideal behavior in ionic solutions, influencing the calculation of ion activity.
  • Cell Notation
    A shorthand representation of the components and boundaries in an electrochemical cell.