Basics Of pH Control FUNDAMENTAL CONSIDERATIONS
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چکیده
Acids are either “strong” or “weak.” This relates to the amount of free hydrogen ions in the solution of a given concentration. Thus, nitric acid is a strong acid, since all of the nitric-acid molecules are dissociated into active hydrogen ions and nitrate ions. However, acetic acid is a weak acid. A solution of acetic acid of the same molar concentration as nitric acid would have a very different pH value, since most of the acetic acid molecules do not dissociate into hydrogen ions and acetate ions. Yet both the nitric and acetic acids have the same total acidity and, therefore, each require the same amount of neutralizing base.
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