pH scale


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pH scale

A 1 to 14 scale that measures alkalinity or acidity: pH7 is neutral, below 7 is acid and above 7 is alkaline.
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Noun1.pH scale - (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per literpH scale - (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic);
hydrogen ion concentration - the number of moles of hydrogen ions per cubic decimeter
acidity - pH values below 7
alkalinity - pH values above 7
neutrality - pH value of 7
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
References in periodicals archive ?
From the creators of the pH scale and the first pure brewer's yeast, the company that donates significant proportions of its earnings to support science, art and culture through the Carlsberg Foundation, and the company for whom phrases like "Open-Source" and "Corporate Social Responsibility" were part of the vocabulary centuries ago.
At some point on the pH scale, the shells of adult shellfish would be compromised, he said.
The pH scale ranges from 0 to 14, seven denoting neutrality.
The pH scale contains 14 divisions known as pH units.
The building has been designed to complement the neighbouring Grade II listed building, and features coloured glass fins that represent the pH scale to symbolise the scientific function of the building.