Titrant

Definition

A titrant is a solution of known concentration used in titration to determine the concentration of an unknown solution. It is typically added from a burette during the process.

5 Must Know Facts For Your Next Test

1. The titrant is always of known concentration and is critical for calculating the unknown concentration in a titration.
2. In acid-base titrations, common titrants include solutions like NaOH (sodium hydroxide) or HCl (hydrochloric acid).
3. The volume of titrant required to reach the endpoint allows for stoichiometric calculations to determine unknown concentrations.
4. An indicator may be used alongside the titrant to visually signal the endpoint of the reaction.
5. The accuracy of a titration depends on precise measurement of both the volume and concentration of the titrant.

Review Questions

• What is the role of a titrant in a chemical analysis?
• Why must the concentration of a titrant be accurately known?
• How does an indicator function in relation to a titrant during a titration?

Related terms

Titration:

A laboratory method used to determine the concentration of an unknown solution by adding a solution of known concentration until the reaction reaches completion.

Endpoint:

The point in a titration at which the reaction between analyte and titrant is complete, often indicated by a color change.

Burette:

A graduated glass tube with a tap at one end, used to deliver known volumes of liquid, especially in titrations.