Definitions for PH

This page provides all possible meanings and translations of the word PH

Princeton's WordNetRate this definition:(0.00 / 0 votes)

  1. pH, pH scale(noun)

    (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);

WiktionaryRate this definition:(0.00 / 0 votes)

  1. pH(Abbreviation)

    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).

  2. ph(Abbreviation)

    phot

  3. Origin: From p, denoting negative logarithm, and H, denoting hydrogen.

FreebaseRate this definition:(0.00 / 0 votes)

  1. pH

    In chemistry, pH is a measure of the activity of the hydrogen ion. p[H], which measures the hydrogen ion concentration, is closely related to, and is often written as, pH. Pure water has a pH very close to 7 at 25 °C. Solutions with a pH less than 7 are said to be acidic and solutions with a pH greater than 7 are basic or alkaline. The pH scale is traceable to a set of standard solutions whose pH is established by international agreement. Primary pH standard values are determined using a concentration cell with transference, by measuring the potential difference between a hydrogen electrode and a standard electrode such as the silver chloride electrode. Measurement of pH for aqueous solutions can be done with a glass electrode and a pH meter, or using indicators. pH measurements are important in medicine, biology, chemistry, agriculture, forestry, food science, environmental science, oceanography, civil engineering, chemical engineering, nutrition, water treatment & water purification, and many other applications.

British National Corpus

  1. Nouns Frequency

    Rank popularity for the word 'PH' in Nouns Frequency: #2243

Anagrams of PH »

  1. hp , HP

  2. HP, hp

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