Which one is the titrant?
Titration is the slow addition of one solution of a known concentration (called a titrant) to a known volume of another solution of unknown concentration until the reaction reaches neutralization, which is often indicated by a color change.
A reagent, called the titrant or titrator is prepared as a standard solution. A known concentration and volume of titrant reacts with a solution of analyte or titrand to determine concentration. The volume of titrant reacted is called titration volume.
- Acid - Base indicators (also known as pH indicators) are substances which change colour with pH. They are usually weak acids or bases, which when dissolved in water dissociate slightly and form ions. Consider an indicator which is a weak acid, with the formula HIn.
- The titrant is usually the solution of known concentration that is delivered by a burette into a known quantity of the solution of unknown concentration. The volume of titrant used to reach the end point is termed the titre.
- In analytical chemistry, the titrant is a solution of known concentration which is added (titrated) to another solution to determine the concentration of a second chemical species. The titrant may also be called the titrator, the reagent, or the standard solution.
The titrant is usually the solution of known concentration that is delivered by a burette into a known quantity of the solution of unknown concentration. The volume of titrant used to reach the end point is termed the titre.
- A back titration is a titration method where the concentration of an analyte is determined by reacting it with a known amount of excess reagent. The remaining excess reagent is then tritrated with another second reagent. In a regular titration, the original sample is titrated.
- Titration is widely used when the concentration of a reagent or certain chemical in a solution is unknown. Students should know how to determine the concentration of the unknown after a titration as well as the reactions involved. Indicators are often used to determine the endpoint of the reaction.
- Noun. 1. titre - the concentration of a solution as determined by titration. titer. concentration - the strength of a solution; number of molecules of a substance in a given volume.
The equivalence point is when the reactants are done reacting. The solution of unknown concentration is otherwise known as the analyte. During titration the titrant is added to the analyte in order to achieve the equivalence point and determine the concentration of the analyte.
- Antacids neutralize (reduce) excess stomach acid to relieve heartburn, sour stomach, acid indigestion, and stomach upset. They can also be used to relieve the pain of stomach and duodenal ulcers. Some antacids contain simethicone, which reduces gas.
- In a typical acid-base titration experiment, the solution containing the analyte (an acid of unknown identity and/or concentration) is placed into a container, and the titrant (a base of accurately-known concentration) is slowly added from the buret in small increments (see Figure 1).
- Chemical indicator, any substance that gives a visible sign, usually by a colour change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. An example is the substance called methyl yellow, which imparts a yellow colour to an alkaline solution.
Updated: 25th September 2018