What does alkalimetry mean?
Alkalimetry is the chemical analysis of an alkali, meaning a base, by determining the amount of base present in a sample. The usual method is titration: a measured quantity of a standard acid is added to the sample until the reaction reaches its endpoint, allowing the analyst to calculate the sample’s alkalinity or concentration. The term is especially associated with laboratory chemistry, pharmaceuticals, water analysis, and industrial quality control. Although “alkalimetry” can refer broadly to the measurement of alkalinity, it often implies a precise volumetric analysis rather than a simple observation that a substance is basic. The word is formal and technically specialized, but it names an elegant practical idea: use a known reaction to discover an unknown quantity. It is also closely related to the broader technique of titrimetry, while “acidimetry” describes the corresponding analysis of an acid.
nounThe measurement or determination of the amount or strength of an alkali, especially by titration with a standard acid. It is a method of quantitative chemical analysis used to determine basicity.
- The measurement of the amount or strength of an alkali, especially by titration against a standard acid.
"The alkalimetry of the solution revealed that its concentration had changed during storage."
"Alkalimetry confirmed that the cleaning solution had become less alkaline than expected."
"In a laboratory exercise, students used alkalimetry to determine the concentration of an unknown base."
The plural is grammatically standard but rarely used because alkalimetry is a specialized name for a method or analysis.
"The two alkalimetries produced slightly different estimates of the solution’s concentration."
Alkalimetry turns a chemical reaction into a number by revealing exactly how much base a solution contains.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of alkalimetry
“Alkalimetry” combines “alkali,” from Latin, ultimately from Arabic al-qaly, referring to ashes or the salts obtained from plant ashes, with “-metry,” from Greek metron, “measure.” The compound belongs to the development of systematic quantitative and volumetric analysis in the 19th century, when precise methods for determining the strength of chemical substances became increasingly important. Its related English forms include “alkalize” and “alkaloid,” all reflecting the same “alkali” root.
Related word forms
How alkalimetry is actually used
A formal, specialist term used primarily in analytical chemistry and related technical writing. It is uncommon in general speech, and its plural is rarely needed.
Easily confused with alkalimetry
Alkalimetry measures or determines the amount of alkali, whereas acidimetry measures or determines the amount of acid.
Titrimetry is the broader method of quantitative analysis by titration, while alkalimetry specifically concerns the determination of alkali.