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Acid-base titration HTML5


Acid-base titration is to determine as precisely as possible the concentration of the acidic solution or a basic solution using a pH measurement.

It is therefore necessary to measure the pH obtained at equivalence. Two methods are commonly used:

  • a graphical method suitable for measurements on graph paper: the method of tangents. 
  • a mathematical method implemented by using a computer: the method of derivation.

Position the parallel lines on the curve.

Click on the points to display the pH measurement

Learning goals

  • To see several examples of acid-base titration. 
  • To know how to interpret the color change of a color indicator. 
  • To know how to determine the volume equivalence of an acid-base titration using the method of tangents and the method of derivatives.

Learn more

pH measurement is easy with a pH meter. However, the accuracy of this instrument is only about 10%! It does not seem suited to the quantitative extent necessary for the determination of unknown…

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