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Q: What isphenolphthalein indicator end point?
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The point in a titration at which the indicator changes is called the?

End point...


How does the equivalence point of a titration differ from its end point?

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.


Does The equivalence point and the end point of a titration occur at the same place in a titration?

The equivalence point and the end point of a titration do not always occur at the same place. The equivalence point is the point at which stoichiometrically equivalent amounts of reactants have been mixed, while the end point is when the indicator changes color. In ideal conditions, the end point would occur at the equivalence point, but this is not always the case due to factors like human error or issues with the indicator.


In a titration when does the indicator change color?

The indicator changes color at the endpoint of the titration, which is when the reaction between the analyte and titrant is chemically complete. This change in color helps signal that the equivalence point has been reached.


What is the difference between the end point in a titration and the equivalence point?

The end point in a titration is when the indicator changes color, signaling that the reaction is close to completion. The equivalence point, on the other hand, is the point at which the amount of added titrant is stoichiometrically equivalent to the amount of analyte in the sample, regardless of indicator color change.


How do you get sharp end point in acid-base titration?

To get a sharp end point in an acid-base titration, it is important to add the titrant (acid or base) drop by drop near the expected end point, which is determined using an indicator. The indicator will change color when the solution reaches the end point, indicating that the reaction is complete. Slowly adding the titrant near the end point helps to achieve a sharp color change and precise determination of the equivalence point.


Describe a method to visually detect the end point of a titration without the use of instruments?

One way to visually detect the end point of a titration without instruments is to use an indicator that changes color at the equivalence point. For example, phenolphthalein changes from pink to colorless at the endpoint of an acid-base titration. Another method is to add the titrant drop by drop and look for a sudden color change in the solution.


. What is the minimum pH change required for a sharp indicator color change at the end point Why?

منحني


What is a 'pyrocatechol indicator'?

Pyrocatechol indicator is used as an end point indicator for titrating nickel metal in a sulfamate nickel cobalt plating bath. It may also be used for other chemical analysis titrations.


What is the minimum pH change required for a sharp indicator color change at the end point?

PH of 3.7


What is the difference between equivalent point and end point in analytical chemistry?

The equivalence point is the point in a titration when the amount of added standard reagent is chemically equal to the amount of analyte. The end point is the point in a titration when a physical change occurring immediate after the equivalence point


Why indicator is being used in titration?

An indicator is so you can see when the end point of the reaction occurs, or when the reaction is complete. This can be an acid-base indicator such as methyl orange which determines the end point with a colour change.