Gran Plot for Titration Endpoint Prediction

A Gran plot helps predict the endpoint of a potentiometric or acid-base titration before the endpoint is reached. It uses titration data collected only up to a point that is still below the equivalence volume. The data are then transformed into a straight-line format.

To build the plot, the line ...

A Gran plot can predict a potentiometric or acid–base titration's equivalence volume or end point without actually titrating to the end point.

The usual titration data that tracks the progress of the titration reaction as a function of the titrant's volume is collected up to a volume less than the equivalence volume and is then converted ...