Question

Before running a titration, you calculate the expected endpoint. However, when performing the experiment, you pass the expected endpoint with no visible color change. What is the most likely problem with the titration set up?

Select one

There is not enough indicator in the analyte.

The buret tip is leaking titrant into the analyle.

The analyte solution is being stirred too quickly

There was an air bubble in the buret tip

Answer 1

Ans : There is not enough indicator in the analyte

Endpoint in a reaction is observed when the sample changes its color. The change in color of the mixture results due to the presence of a suitable pH indicator.

Now if the experiment has crossed the endpoint with no visible color change , it is possible that there is not enough indicator in the mixture so as to express the color.