What is a titrator called?
A reagent, termed the titrant or titrator, is prepared as a standard solution of known concentration and volume. The titrant reacts with a solution of analyte (which may also be termed the titrand) to determine the analyte’s concentration.
How does a titrator work?
A Titrator consists basically of an electric burette, a sensor whose signal is amplified with an preamplifier and a microcomputer. During a titration, the Titrator measures the signal of the sensor and uses this information to control the addition of the titrant with the electric burette.
Why do we titrate?
A titration is a technique where a solution of known concentration is used to determine the concentration of an unknown solution. Typically, the titrant (the know solution) is added from a buret to a known quantity of the analyte (the unknown solution) until the reaction is complete.
Who invented titration?
In the 18th century, Francois Antoine Henri Descroizilles1 invented the first buret. The process was developed further by Karl Friedrich Mohr, who, in 1855, wrote the first book about titration, called “Instructional Book of Titration Methods in Analytical Chemistry.”
Why is back titration used?
A back titration is used when the molar concentration of an excess reactant is known, but the need exists to determine the strength or concentration of an analyte. Back titration is typically applied in acid-base titrations: When the acid or (more commonly) base is an insoluble salt (e.g., calcium carbonate)
What does Titrimetry mean?
Titrimetry refers to a group of methods of quantitative analysis in which an analyte is determined basing on its stoichiometric reaction with a reagent of established concentration introduced to a sample gradually until the analyte is consumed quantitatively.
What chemicals are used in titration?
To carry out an accurate titration using dilute hydrochloric acid, dilute sodium hydroxide solution, and phenolphthalein indicator . Titration is a practical technique used to determine the amount or concentration of a substance in a sample. It is an example of quantitative analysis.
What are pM indicators?
Complexometric Indicator Complexometric indicators are those indicators that are used in complexometric titrations. These indicators undergo a definite colour change in presence of specific metal ions. These indicators are also known as pM indicators or metallochromic indicators.
What is the pH of phenolphthalein?
phenolphthalein, (C20H14O4), an organic compound of the phthalein family that is widely employed as an acid-base indicator. As an indicator of a solution’s pH, phenolphthalein is colourless below pH 8.5 and attains a pink to deep red hue above pH 9.0.