pH in the Chemistry topic by Longman Dictionary of Contemporary English | LDOCE | What you need to know about Chemistry: words, phrases and expressions | Chemistry
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...
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,...
(Chemistry) potential of hydrogen; a measure of the acidity or alkalinity of a solution equal to the common logarithm of the reciprocal of the concentration of hydrogen ions in moles per cubic decimetre of solution. Pure water has a pH of 7, acid solutions have a pH less than 7, and alk...
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 ...
PH, quantitative measure of the acidity or basicity of aqueous or other liquid solutions. The term, widely used in chemistry, biology, and agronomy, translates the values of the concentration of the hydrogen ion into numbers between 0 and 14. Learn more
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 the effective concentration...
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 | ...
Thus it can be regarded only as a notional definition. The establishment of primary pHpH standards requires the application of the concept of 'primary method of measurement', assuring full traceability of the results of all measurements and their uncertainties. Any limitation in the theory of ...
Define pyrogallolphthalein. pyrogallolphthalein synonyms, pyrogallolphthalein pronunciation, pyrogallolphthalein translation, English dictionary definition of pyrogallolphthalein. n chem a brown or green dye, used to colour textiles and as a pH indicator