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Titration of a polyprotic acid with a strong base with the aid a suitable indicator

Titration of a polyprotic acid with a strong base with the aid a suitable indicator

Item no.: P7511000

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Principle

During this experiment, the students have to determine the unknown concentration of sulphuric acid (solution to be analysed) with the aid of a suitable indicator (here: phenolphthalein). For this purpose, a known volume of the acid is titrated with a volume of a sodium hydroxide solution of a known concentration (standard solution) until the indicator changes colour. The used volume of the standard solution and its concentration are then used to calculate the concentration of the solution being analysed.


What you can learn about

  • Titration of sulphuric acid

 

Benefits

  • Experiment literature available for pupils and teachers: Minimum preparation time
  • Simple teaching and efficient learning by using the available interactive experiment literature

 

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