what is mean by pH ?what does it indicate
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pH is a measure of how acidic/basic water is. The range goes from 0 to 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.
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pH means power of hydrogen. it shows basisity or acidity of some medium. the no. of H+ ions in medium determines its pH .
More the no of hydrogen ions the lesser will be pH of solution.
it was discovered by Surenson in 1905
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