In chemistry, titratable acid generally refers to any acid that can lose one or more protons in an acid–base reaction.
The term is used slightly differently in other fields. For example, in renal physiology, titratable acid is a term to describe acids such as
phosphoric acid
Phosphoric acid (orthophosphoric acid, monophosphoric acid or phosphoric(V) acid) is a colorless, odorless phosphorus-containing solid, and inorganic compound with the chemical formula . It is commonly encountered as an 85% aqueous solution, w ...
,
sulfuric acid which are involved in
renal physiology
Renal physiology (Latin ''rēnēs'', "kidneys") is the study of the physiology of the kidney. This encompasses all functions of the kidney, including maintenance of acid-base balance; regulation of fluid balance; regulation of sodium, potassium, ...
. It is used to explicitly exclude
ammonium (NH
4+) as a source of acid, and is part of the calculation for
net acid excretion.
It gets its name from the use of
NaOH
Sodium hydroxide, also known as lye and caustic soda, is an inorganic compound with the formula NaOH. It is a white solid ionic compound consisting of sodium cations and hydroxide anions .
Sodium hydroxide is a highly caustic base and alkali ...
in
acid–base titration
An acid–base titration is a method of quantitative analysis for determining the concentration of an acid or base by exactly neutralizing it with a standard solution of base or acid having known concentration. A pH indicator is used to monit ...
to estimate the quantity of titratable acid.
[{{cite book, title= Essentials of Human Physiology, first= Thomas M. , last= Nosek, chapter=Section 7/7ch12/7ch12p27 , chapter-url=http://humanphysiology.tuars.com/program/section7/7ch12/7ch12p27.htm , archive-url=https://web.archive.org/web/20160303095156/http://humanphysiology.tuars.com/program/section7/7ch12/7ch12p27.htm, archive-date=2016-03-03 - "Regeneration of Bicarbonate, the Role of Titratable Acid: Definition of Titratable Acid"]
See also
*
Acids in wine
References
Acid–base physiology