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Chemistry vocabulary · Analytical Methods

Standard solution

Meaning in chemistry, with examples

nounCommon term

In chemistry, standard solution means: A solution whose concentration is known accurately. It is used to find the concentration of other solutions in titrations or to build calibration curves.

In Turkish: standart çözelti, ayarlı çözelti

How it is used

Used in quantitative analysis. You prepare a standard solution by weighing a primary standard, or you standardize a solution against one. For calibration you make a series of standards at different concentrations.

Example sentences

  1. Prepare a standard solution of potassium hydrogen phthalate to standardize the NaOH.

  2. We made five standard solutions between 1 and 10 ppm for the calibration.

Common collocations

  • prepare a standard solution
  • primary standard
  • standardize a solution
  • working standard
  • 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.
  • calibration curveA graph of instrument signal against the known concentrations of several standards. The concentration of an unknown sample is read from it using the sample's signal.
  • volumetric flaskA pear-shaped flask with a long narrow neck and a single line marked on it. Filled to that line, it holds one exact volume, so it is used to prepare standard solutions.
  • concentrationThe amount of a substance in a given volume of solution or mixture, for example in moles per liter (mol/L), grams per liter or parts per million (ppm).
  • analytical balanceA very sensitive electronic scale, usually reading to 0.1 mg, kept inside a glass draft shield so that air currents do not disturb the reading.

More terms: Analytical Methods

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