Volunetric Analysis Flashcards
(11 cards)
What is volumetric analysis?
A technique used to determine the concentration of a solution by reacting it with a standard solution.
What is a standard solution?
A solution of known concentration used in titrations.
What apparatus is used to accurately measure volumes in titrations?
Burette, pipette, and volumetric flask.
What is the purpose of a titration?
To find the exact volume of one solution required to react completely with a known volume of another.
What is the endpoint in a titration?
The point at which the reaction is complete, indicated by a permanent colour change.
What is an indicator in titration?
A substance that changes colour at the endpoint to show the reaction is complete.
Name a suitable indicator for a strong acid–strong base titration.
Phenolphthalein or methyl orange.
Why are rough and accurate titrations done?
A rough titration gives an estimate, then accurate titrations are repeated until consistent results (within 0.1 cm³) are obtained.
Why should a volumetric flask be used to prepare a standard solution?
It allows very accurate measurement of a specific volume.
Why is it important to rinse the burette and pipette with the solutions they will contain?
To prevent dilution or contamination of the solutions.
Why should the conical flask be swirled during titration?
To ensure the solutions mix thoroughly and react completely.
