From: John Woodgate
Subject: Re: O.T. Math help
Date: Wed, 6 Nov 2002 16:19:24 +0000
Organization: JMWA Electronics Consultancy
Reply-To: John Woodgate
NNTP-Posting-Date: Wed, 6 Nov 2002 17:38:17 +0000 (UTC)
X-Newsreader: Turnpike (32) Version 4.01 <5Z8C9wtxbnpWyFnyfFzqmVF739>
I read in sci.electronics.design that George Gonzalez
wrote (in ) about
'O.T. Math help', on Wed, 6 Nov 2002:
>The book said that sugar dissolving in water was a chemical change (as
>opposed to a physical change).
Ah, well, if we are into the sucrose/water system, we are here for a
LONG time. It's VERY complex. Put simply, crystalline sugars
identifiable as sucrose (4-alpha-D-glucopyranosyl-beta-L-
fructofuranoside) exist in a number of forms of very variable solubility
in water. Russian cube-sugar, as grudgingly served at Moscow Airport,
was notorious for being almost insoluble, even in hot coffee.
This variable solubility is, or was, actually put to good use in the
refining process for cane sugar.
Exactly which, if any, crystals dissolve without attracting or
liberating water of crystallization and/or hydration of bonded H or OH,
is a study in itself.
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
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