Chemistry DictionaryDefinition of pH What is pH? The pH scale is alternatively sometimes called the pH-acid-base scale and sometimes just the acid-base scale. In neutral solutions, i.e. those that are neither acidic nor basic, pH = 7.0. Acidic solutions are those with pH less than 7,...
The more precise definition is in terms of activity rather than concentration. A solution of pH 0 to 7 is acid, pH of 7 is neutral, pH over 7 to 14 is alkaline.Citing this page: Generalic, Eni. Croatian-English Chemistry Dictionary & Glossary. 29 June 2022. KTF-Split. 21 Feb. 2025...
IUPAC Definition of pH The International Union of Pure and Applied Chemistry (IUPAC) has a slightly different pH scale based on electrochemical measurements of a standardbuffer solution. Essentially, the definition uses the equation: pH = -log aH+ where aH+stands for hydrogen activity, which is ...
Mathematical definition of pH is a little less intuitive but more useful in general. It states that the pH equals the negative logarithmic value of the concentration of hydrogen ion (H+) pH = -log [H+] A water source ‘s pH value is a function of its acidity, or alkalinity. The pH ...
9 RegisterLog in Sign up with one click: Facebook Twitter Google Share on Facebook phallin (ˈfælɪn) n (Chemistry)cheman element that is found in the death cap toadstool that was originally suspected as being the poisonous essence of the fungus ...
Salt, in chemistry, substance produced by the reaction of an acid with a base. A salt consists of the positive ion (cation) of a base and the negative ion (anion) of an acid. The reaction between an acid and a base is called a neutralization reaction. Th
The Bronsted-Lowry and Lewis Definition of Acids and Bases 6:15 Acid-Base Neutralization Reactions | Overview & Examples 5:43 Autoionization & Dissociation Constant of Water 6:41 The pH Scale | Definition, Equation & Examples 9:49 11:05 Next Lesson Coordination Numbers in Chemistry | ...
abbreviation chemistry The negative of the logarithm to the base 10 of the concentration of hydrogen ions, measured in moles per liter; a measure of acidity or alkalinity of a substance, which takes numerical values from 0 (maximum acidity) through 7 (neutral) to 14 (maximum alkalinity).Etymol...
Hospital of la Santa Creu in Sant Pau, Department of Biochemistry, Barcelona, SpainPeter Hyltoft PetersenNOKLUS, Norwegian Quality Improvement of Primary Care Laboratories, Division for General Practice, University of Bergen, Bergen, NorwayDe GruyterChemistry International Newsmagazine for Iupac...
phthalein [ thal-een, -ee-in, fthal- ] Phonetic (Standard) IPA noun Chemistry. any of a group of compounds formed by treating phthalic anhydride with phenols, from which certain important dyes are derived.Discover More Word History and Origins Origin of phthalein1 First recorded in 1900–...