On Fri, 29 Oct 2004 23:25:52 +0100, The Natural Philosopher
wrote:

Keith G. Powell wrote:



What is brick acid? Is it concentrated hydrochloric acid?

30% conc. HCL - mine is anyway.


I believe that fully concentrated HCl is around 35% but rather less
stable at that concentration and a pH close to 0.

Stomach acid is also HCl and has a pH of 1-2.

One of the reasons for a sore throat after a Technicolor yawn.
(aside - why is there always tomato skin and diced carrot even if you
haven't eaten any?)




..andy

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