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The End Point definitions

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  • Endpoint
    Range in a titration where an indicator undergoes a noticeable color change, signaling a significant chemical change.
  • Equivalence Point
    Stage in titration where stoichiometric amounts of reactants have completely reacted, often indicated by a sharp potential change.
  • Redox Indicator
    Substance that changes color due to a shift in oxidation state, reflecting the solution's potential during a redox titration.
  • Titrant
    Solution of known concentration added to react with the analyte, affecting the potential and causing indicator changes.
  • Analyte
    Substance being analyzed in a titration, which reacts with the titrant and interacts with the indicator.
  • Oxidizing Agent
    Species that removes electrons from another, often causing the indicator to shift to a higher oxidation state.
  • Reducing Agent
    Species that donates electrons, typically causing the indicator to shift to a lower oxidation state.
  • Nernst Equation
    Mathematical expression relating cell potential to the ratio of reduced and oxidized forms under non-standard conditions.
  • Transition Range
    Potential interval where an indicator changes color, ideally overlapping the steepest part of the titration curve.
  • Titration Curve
    Graph showing how solution potential or pH changes as titrant is added, highlighting sharp increases at key points.
  • First Derivative
    Mathematical tool representing the rate of change in potential with respect to volume, used to pinpoint endpoints.
  • Gran Plot
    Graphical method using the first derivative of potential versus volume to accurately identify the endpoint.
  • Oxidation State
    Numerical value representing the electron count change of an atom, crucial for indicator color shifts in redox titrations.
  • Cell Potential
    Electrical potential difference between two electrodes, influenced by the redox state and used to monitor titrations.
  • Color Change
    Visible shift in indicator appearance, signaling a chemical transition such as oxidation or reduction during titration.