instead of saying that the concentration of hydrogen ion in pure water is 1.00 x 10−7, it is customary to say that the pH of pure water is 7 Linus Pauling also : the condition represented by such a number compare pk More from Merriam-Webster on pH Britannica.com: Encyclopedia article...
definition of pHseawater pH scalespotentiometryspectrophotometryIN the course of certain researches in progress at this Laboratory it became necessary to find a satisfactory method of determining potentiometrically the pH. of the moisture present in wood when the latter is in the air-dry condition, ...
Definition Word History Entries Near Cite this Entry Share Show less Save Word Caryophanalesplural nounCar·y·oph·a·na·les ˌkarēˌäfəˈnā(ˌ)lēz : a small order of filamentous bacteria that occur in water, decaying organic matter, and the alimentary ...
measurements in view of the fact that itsionic strength (0.1 mol kg1) is closer to the ionic strength of body fluids (0.16 mol kg)and closer in pH than the RVS. These requirements justify the definition of a separatepH scale for clinical measurements as is also needed for sea water ...
1.7 ScopeThe recommendations in this Report relate to analytical laboratory determinations of pH of dilute aque-ous solutions (≤0.1 mol kg–1). Systems including partially aqueous mixed solvents, biological meas-urements, heavy water solvent, natural waters, and high-temperature measurements are ...
(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...
pH measurement is an important parameter in nearly every water quality application. In environmental sampling and monitoring, high or low pH values can be indicative of pollution. To determine the pH of water, a pH meter can be used to measure this impor
Water with a pH value between 4.5 and 8.3 has both total acidity and total alkalinity. The definition of pH, which is based on logarithmic transformation of the hydrogen ion concentration ([H+]), has caused considerable disagreement regarding the appropriate method of describing average pH. The ...
The definition of pH and its measurement is well-developed for aqueous solutions; however, the determination of pH in non-aqueous solutions is less defined. Numerous functions, theories, and calculations have been developed over the years to indicate the acidity/basicity of non-aqueous or strongly...
This is the definition of a pH indicator in chemistry and other sciences, with examples of common indicators. What a pH Indicator does.