Absorption Indicator (Noun)
Meaning
An indicator used in reactions that involve precipitation.
Classification
Nouns denoting substances.
Examples
- An absorption indicator is usually added to the filtrate to determine the presence of any remaining ions that did not precipitate out during the reaction.
- The lab technician carefully added a few drops of the absorption indicator to the test tube, watching as the solution began to cloud.
- When the absorption indicator showed no further signs of reaction, the scientist knew that all the excess ions had been removed from the solution.
- An absorption indicator often reacts by forming a colored precipitate when all the desired minerals have been extracted from a sample.
- By monitoring the solution for changes in the absorption indicator, the researcher could gauge the success of the reaction and the degree of precipitation that had taken place.