Question

How do you tell equivalence point from a pH graph in titration lab? How to tell if an acid is triprotic

Answer 1

in the graph almost the straight line which parellel to y-axis we observe at certain point . this is called equailvalence point.

or at one drop volume of titration addition the value drastacally changes. volume is very little amount but the pH change is very large . which you can see in the image

acid triprotic acid which gives three equivalence points . becuase it is triprotic acidic .

in the titration curve of acid and base , if we get three equivalence points that indicates it is triprotic acid