Okay, so last night I goofed, because I have mental dyslexia when it comes to numbers.
We were discussing pop, and I said that the pH of coke was 4.2-something, and pepsi was slightly worse. The second part is accurate, but I switched things around a bit in my head. The pH of pepsi is 2.49, and coke is 2.53. Thank you.
And more helpful information, to give you a rough scale on that. Water has pH of 7.00 (if it's absolutely pure H2O - other factors can tweak it very slightly to either direction). Battery acid has a pH of about 1.00. The nature of the acid in pop is that it starts an attack on whatever surface you put it on, and this apparently lasts 20 minutes. My sister's done the fun thing where you put pennies in coke and it eats off the copper, but it takes a little while. I've been told (two of my friends' dads are officers) that squad cars carry two liters of pop in order to clean blood off of highways, but I don't know that that's certain.
(Incidentally, diet pop has no sugar, but almost the same acid levels as the regular version).
Still. Cool stuff to play with. I have a fondness for powerful stuff that I have virtually unlimited access to. I'm wondering what else it can eat through.
science
