note on PH scale..... plzzz don't write any other things if u don't know my answer. i m telling u that my exam is nearest so i m practising for that. If anyone know then plzzz answer my question.
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pH is a measure of hydrogen ion concentration, a measure of the acidity or alkalinity of a solution. The pH scale usually ranges from 0 to 14. Aqueous solutions at 25°C with a pH less than 7 are acidic, while those with a pH greater than 7 are basic or alkaline.
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