Klarinet Archive - Posting 000306.txt from 1999/12

From: Dave Sandusky <daves@-----.com>
Subj: Re: [kl] definition of pH
Date: Sat, 11 Dec 1999 00:06:50 -0500

Ok...this get a bit too esoteric, so I found a web page that does a pretty
good job of explaining the whole pH thing, including activity. The URL is:

http://www.science.ubc.ca/~chem/tutorials/pH/index.html

Give that a shot! Have a good weekend everybody!

Dave S.

Tony Pay wrote:

> On Fri, 10 Dec 1999 07:49:11 -0800, daves@-----.com said:
>
> > Minor detail guys...pH is equal to the negative log (base ten) of the
> > hydronium ion activity, which is not, strictly speaking, the same as
> > the concentration (especially at the extremes). Enough chemistry for
> > one day!
>
> OK, I'll bite. It's another day after all.
>
> (Actually, I think one of the minor satisfactions of this list is to get
> such marginally off-topic things sorted out in a community not
> professionally dedicated to the topic, but which contains experts of all
> sorts.
>
> That's also true of clarinet-related topics, of course.)
>
> So, why isn't it equal to the negative log (base ten) of the hydrogen
> ion concentration? Which is what I was taught, I think, and which the
> calculations always assumed?
>
> Tony
> --
> _________ Tony Pay
> |ony:-) 79 Southmoor Rd Tony@-----.uk
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>
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