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Fruit juices get their sweet taste from sugars like fructose and glucose and tartness from acids like citric acid and tartaric acid. The balance of sugar to acid content is important in establishing the appealing taste of fruit juices. With the Total Acidity: Titration of Fruit Juices—ChemTopic™ Lab Activity, compare the citric acid content in a variety of fruit juices by determining the “total acidity” through titration with sodium hydroxide.