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Phenolphthalein is used as an indicator in acid-base titrations because it changes color in a specific pH range, typically from colorless to pink as the solution becomes more basic. This color change helps to visually identify when the reaction has reached the endpoint, making it easier to determine the exact volume of titrant required to neutralize the analyte.
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Why is phenolphthalein is used in titration experiment?
it is used as an acid-base indicator
How much phenolphthalein indicator should be used?
Typically, 1-2 drops of phenolphthalein indicator are sufficient to use in an acid-base titration experiment. It is important not to use too much indicator, as it can affect the accuracy of the titration results.
The purpose of an indicator in a titration experiment?
An indicator is used in a titration experiment to signal the endpoint of the reaction. It changes color when the reaction is complete, helping to determine the amount of titrant needed to reach the equivalence point. This visual indication allows for accurate measurements and precise calculations in the titration process.
Why is phenolphthalein used in the titration experiment?
Phenolphthalein is used in titration experiments as an acid-base indicator because it changes color at a specific pH range (pH 8.2-10.0), making it easy to visually detect the endpoint of the titration when the solution changes from acidic to basic or vice versa. This helps in determining the volume of titrant needed to reach the equivalence point accurately.
What indicator can you choose for the titration of oxalic acid with sodium hydroxide?
Phenolphthalein is a suitable indicator for the titration of oxalic acid with sodium hydroxide. It changes color from colorless to pink at the endpoint of the titration when the acid has been completely neutralized.
Why is phenolphthalein is used in titration experiment?
it is used as an acid-base indicator
How much phenolphthalein indicator should be used?
Typically, 1-2 drops of phenolphthalein indicator are sufficient to use in an acid-base titration experiment. It is important not to use too much indicator, as it can affect the accuracy of the titration results.
The purpose of an indicator in a titration experiment?
An indicator is used in a titration experiment to signal the endpoint of the reaction. It changes color when the reaction is complete, helping to determine the amount of titrant needed to reach the equivalence point. This visual indication allows for accurate measurements and precise calculations in the titration process.
Why is phenolphthalein used in the titration experiment?
Phenolphthalein is used in titration experiments as an acid-base indicator because it changes color at a specific pH range (pH 8.2-10.0), making it easy to visually detect the endpoint of the titration when the solution changes from acidic to basic or vice versa. This helps in determining the volume of titrant needed to reach the equivalence point accurately.
What indicator can you choose for the titration of oxalic acid with sodium hydroxide?
Phenolphthalein is a suitable indicator for the titration of oxalic acid with sodium hydroxide. It changes color from colorless to pink at the endpoint of the titration when the acid has been completely neutralized.
What tools are used during and acid base titration experiment?
Burette Methyl orange Phenolphthalein Pipette
Is phenolpthalen an indicator?
Yes - it's used in acid-base titration.
Which indicator is used for the titration of weak acid and strong base?
Phenolphthalein is commonly used as the indicator for the titration of a weak acid and a strong base. It changes color from colorless to pink at the equivalence point of the titration when the weak acid is completely neutralized by the strong base.
Why is phenolpthalein used as the indicator for the assay of tartaric acid?
Phenolphthalein is used as an indicator during the titration of tartaric acid because the pH at which phenolphthalein changes color (around pH 8.2-10) is close to the equivalence point of the titration of tartaric acid with a strong base like NaOH. This makes it a suitable indicator for detecting the endpoint of the titration when the acid has been completely neutralized by the base.
What is the term for the stage in an acid-base titration when the indicator changes color?
The term for the stage in an acid-base titration when the indicator changes color is called the endpoint. It signifies that the stoichiometric equivalence point has been reached, where the acid and base have reacted completely.
What is the color of the indicator when an excess of hydrochloric acid has been added?
The indicator turns pink when an excess of hydrochloric acid has been added in a titration.
What criterion is used in selecting an indicator for a particular acid-base titration?
The key criterion for selecting an indicator for an acid-base titration is that the indicator's color change should occur close to the equivalence point of the titration. This ensures that the indicator accurately signals when the reaction is complete. The pH range over which the indicator changes color should match the pH range around the equivalence point.
