SPENCER GRANT / SCIENCE PHOTO LIBRARY SPENCER GRANT / SCIENCE PHOTO LIBRARY
A pipette drips ordinary vinegar (acid) into a beaker containing a precise volume of NaOH sodium hydroxide (base) or analyte to illustrate the process of titration. Drops of the vinegar or titrant are added to the sodium hydroxide, or titrand, until the colour changes, reflecting arrival at the endpoint of the titration. The volume of reactant consumed is used to calculate the concentration of analyte. Titration has just begun: Note pink colour.
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