Talk:Iron Mountain Mine

From Wikipedia, the free encyclopedia

An entry from Iron Mountain Mine appeared on Wikipedia's Main Page in the Did you know? column on 6 May 2007.
Wikipedia

[edit] Unactive Link

The link in Reference #2 does not access the page anymore; the link may be outdated.

Julie22193 01:13, 7 May 2007 (UTC)

[edit] -3.6 pH?!

A solution in water can't have a pH of -3.6 because this means it has a hydronium concentration of 10^3.6 > 1000 M. Pure water is only about 55 M water at normal pressures. The link for Reference #2 is active now; I have every reason to doubt it, but no idea what the pH should be. 71.8.223.241 03:40, 7 May 2007 (UTC)

Agreed. Two degrees in chemical engineering lead me to doubt this value. 71.81.53.198 04:20, 7 May 2007 (UTC)

EDIT - I have to eat my words! Learning truly does continue beyond university. One has to take activity corrections into account, and in the case of acid mine drainage one can achieve negative pH values at "normal" concentrations (on the order of 10-100 M)!!! Read up on the "Explanation" section of Wikipedia's article on pH:

http://en.wikipedia.org/wiki/PH

71.81.53.198 04:26, 7 May 2007 (UTC)