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The regular Pepsi has thirty six milligrams of phosphoric acid in every serving. It also contains citric acid and twenty five milligrams of caffeine.
http://answers.ask.com/Food_and_Drinks/Food_and_Co...
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oxalic acid.
http://wiki.answers.com/Q/What_kind_of_acid_is_in_...
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Carbonic acid. Or carbon dioxide dissolved in water under pressure.
http://wiki.answers.com/Q/What_acids_are_present_i...
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2.61.
http://wiki.answers.com/Q/What_is_the_acidity_of_P...
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