It follows the lemon has a pH of 2 with a concentration of vitamin C is 34 mg / 100g pineapple juice has a pH of 3, the concentration of vitamin C is 30 mg / 100g tomato has a pH of 4 with a concentration of ascorbic acid. equivalent to 21.3 mg / 100g guava and has a pH of 5 is equivalent to the concentration of vitamin C 183 mg / 100g of the trial will be found. Lime, which has acidity 2pH in fruit and four types of concentrated vitamins, 34 milligrams, but I have the acidity just 4pH to the concentration of vitamin C up to 183 mg showed clearly that living conditions. the acid - base and the amount of vitamin C inverses.