How much phosphoric acid is in 100ml of orange juice?

Answer 1

Assuming the Orange Juice hasn't had additives added to it (e.g. it is freshly squeezed), there is NO phosphoric acid in orange juice, regardless of the quantity. Phosphoric acid is an INorganic (mineral) acid, made in bulk to add to Coke, rust removers, etc. The acidity in orange juice comes from CITRIC acid, a weak and natural organic acid, hence the term "citric fruit" for Oranges, limes, lemons and the like. In lemons and limes citric acid can account for up to 8% of the (dry) weight; it's noticeably less in oranges, and can vary significantly depending upon the variety of the orange, as well as where it was grown (similarly with the proportion of vitamin C, ascorbic acid).