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Produtos Ensino CientíficoQuímica Geral

Inserir no projetoP3061640Curvas de titulação e capacidade tamponante com Cobra3

Principle:

pH values can be measured with the aid of electrochemical measurements and proton-sensitive electrodes (e.g. glass electrodes). By combining a glass electrode with a reference electrode in one housing, a single-rod glass electrode, which is appropriate for acid-base titrations, is created. The titration curves allow an exact determination of the equivalence point in titrations of strong and weak acids and bases.

Tasks:

  • Determine the titration curves of different neutralisation reactions.
  • Determine the titration curve of an ampholyte (glycine).
  • Determine the buffering capacity of various aqueous acetic acid/sodium acetate mixtures at different total concentrations.

What you can learn about:

  • Strong and weak electrolytes
  • Hydrolysis
  • Dissociation of water
  • Amphoteric electrolytes
  • Isoelectric point
  • Law of mass action
  • Indicators
  • Glass electrode
  • Activity coefficient
  • Buffering capacity
  • Henderson-Hasselbalch equation