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Chemistry vocabulary · Analytical Methods

Endpoint

Meaning in chemistry, with examples

nounCommon term

In chemistry, endpoint means: The point in a titration where the indicator changes color or the signal changes sharply, showing that the reaction is complete and you should stop adding titrant.

In Turkish: dönüm noktası, bitiş noktası

How it is used

Used in titration practice and reports. You approach, reach, detect or overshoot the endpoint. Strictly, the equivalence point is where the amounts react exactly; a good indicator puts the endpoint very close to it.

Example sentences

  1. Add the titrant drop by drop as you approach the endpoint.

  2. I overshot the endpoint, so the solution is dark pink instead of pale pink.

Common collocations

  • reach the endpoint
  • overshoot the endpoint
  • endpoint detection
  • sharp endpoint
  • equivalence point
  • titrationA method for finding the unknown concentration of a solution by adding a solution of known concentration from a burette until the reaction between them is just complete.
  • indicatorA substance that changes color at a certain pH or at the end of a reaction, used to show when a titration is complete. Phenolphthalein and methyl orange are common examples.
  • buretteA long, graduated glass tube with a tap (stopcock) at the bottom, used to add a liquid gradually and measure exactly how much was added, mainly in titrations.
  • standard solutionA solution whose concentration is known accurately. It is used to find the concentration of other solutions in titrations or to build calibration curves.

This word in other fields

The same English word can have a different meaning in another field:

More terms: Analytical Methods

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