Best Answer

when the equivalence point of a titration is achieved..


(More precisely:)

The equivalence point is the point where the number of moles of base equal the number of moles of acid. The end point is the point where the indicator being used changes color (also 'indication point)'.

If the indicator is chosen correctly, the end point will essentially be exactly as near as possible at the equivalence point.

The point of the titration is to find the equivalence point -- the end point is just a very close approximation to it. This is because the pH of the solution changes very rapidly close to the equivalence point.

Therefore, the indicator will change color very close to the equivalence point because of the steepness of the pH change

User Avatar

Wiki User

14y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: In a titration when does the indicator change color?
Write your answer...
Still have questions?
magnify glass
Related questions

What is the function of an indicator in titration?

Change color

What changes color at the endpoint of titration?

change in pH, changes the colour (of the indicator)

What is a function of an indicator in a titration?

The function is to change color. This happens when all the H+ ( or H3O+) from the acid has been neutralized, an indicator in the sample will change

What does a color change in an acid-base titration mean?

according to change of PH of medium where the indicator color is changed according to PH of medium

What happens during an acidic base titration in the presents of an indication?

The indicator will change color as the pH changes.

If the equivalence point of a titration is 5 what range of pH should the indicator be?

The indicator should change color right at the equivalence point, so 5.

Why is important that the indicator is present in the solution during the course of titration?

the reason why a indicator is important in some titration is to show a change in the solution. for example as a solution runs from acidic to basic the indicator may turn a different color. but this is the reason why it is important inmost experiments.

What structure of phenolphthalein indicator and the reaction of the color exchange in the titration?


What is the color of the end point for the titration of the acid?

A general acid-base titration may not indicate a color change. Therefore an indicator is used. Among the most used indicators are methyl red, methyl orange and bromothymol blue.

What is stoichiometric end point?

when stoichiometric amounts of the titrant and the analyte have completely reacted. this differs from an endpoint which is when a secondary indicator's color change takes place. :) hope that helps

When do you know endpoint of titration?

when the colour of the indicator used is the color it should be in neutral

When to use back-titration instead of direct titration?

When you have passed the tipping point and the color indicator turns from it's color to the clear color of the original solution. Then you back titrate to color again.