orange juice because it contains more vitamin C than water.
orange works better because it has more citric acids than apple juice does, all the apple juice will do is make the penny stickier.
Oranges are orange and grapefruits are a lighter color. Grapefruits have a more sour taste, while the orange has a fruitier taste.
Grape Juice
This site give a breakdown. Kiwis and strawberries have more Vitamin C than oranges. http://www.examiner.com/x-3695-Las-Vegas-Fitness-Examiner~y2009m10d29-Vitamin-C-quiz-Which-contain-more-vitamin-C-an-orange-a-strawberry-or-a-kiwi-fruit
Hi I also wanted to know this. Found this answer on the net. Fresh is the way to go. "Orange juice is frequently bought as a frozen concentrate. Frozen, reconstituted orange juice has 78% and canned orange juice has 69% of the vitamin C found in fresh squeezed orange juice. Vitamin C is destroyed during the condensing process, but canning is even harder on vitamin C. It appears that fresh squeezed orange juice is better than either frozen concentrate or canned..." Source: http://www.dietitian.com/vitaminc.html
Not really. The main thing you gain from drinking OJ with pulp is more fibre.
Grape Juice because it has more acid in it usually.
Lemon juice. It has a pH of 2.3, whereas orange juice has a pH of 3.3. What is being cleaned off is the CuO and CuCO3 that forms on the penny. Both O2- and CO32- are bases, so the stronger the acid, the more effectively they will be reacted away. I did a quick online search for the pH of grape juice but did not find anything, but given that it lacks the sour taste that orange and lemon juice have (an indicator of acidity), I would have to assume that it is not as acidic as either lemon or orange juice.
No. Ascorbic acid, vitamin C, is a concentrated acid, whereas orange juice is not concentrated and contains more than just ascorbic acid.
Fruit juice has more vitamin C than vegetable juice.
Yes it does (I know because i did the test on orange juice) The more Vitamin C something has in it the less drops of that thing (in my case the orange juice) is needed for the DCPIP to go pale yellow. It is an awesome test! I would try it ( only if you have DCPIP and lots of different types of orange juice! Of course!)