PH Test

PH Test (PH paper) - Papier pour mesurer le PH

PH Test (PH paper) – Papier pour mesurer le PH

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PH Test (PH paper) – Papier pour mesurer le PH

PH : In chemistry, the « potential of hydrogen » is a numeric scale used to specify the acidity or basicity of an aqueous solution. It is approximately the negative of the base 10 logarithm of the molar concentration, measured in units of moles per liter, of hydrogen ions. More precisely it is the negative of the logarithm to base 10 of the activity of the hydrogen ion.[1] Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are basic. Pure water is neutral, at pH 7, being neither an acid nor a base. Contrary to popular belief, the pH value can be less than 0 or greater than 14 for very strong acids and bases respectivel

Le potentiel hydrogène, noté pH, est une mesure de l’activité chimique des ions hydrogène H+ (appelés aussi couramment protonsnote 1) en solution. Notamment, en solution aqueuse, ces ions sont présents sous la forme de l’ion oxonium (également, et improprement, appelé ion hydronium).