Chemistry - Back titrations
In an accurate quantitative analysis of a substance for a particular
component (sometimes called the active ingredient), it is necessary to
ensure that all of that component (active ingredient) reacts.
This can be done by adding an excess of a substance which will react with
that component. The amount of the component which actually reacts is then
determined by means of a titration to find out how much of the added
substance remains unreacted.
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