Newsgroup sci.chem.electrochem 4719

Directory

Industry and the government have started the National Metal Finishing
Resource Center (http://cai.eclipse.net).  It a free site with loads of
technical infomation about wastewater treatment and cyanide.  There are
more than 4,000 articles in their database and you can get into a
wastewater on-line conference to ask questions.
George Cushnie

Hi all,
I am looking for DC and low freq conductivities
of water and weak electrolytic solutions,
preferably in s/cm^2. I'd also like to know the mobilities/diffusivities
of H+, OH- and other ions in aqueous solution. 
Related question: suppose I impose and emf
in an electrolytic solution, can one calculate from 
the above requested information, the viscous (stokes) flow?
(Assume I have electrodes/geometry that allows passage of fluid
so a steady state flow can be set up).
Any pointers in the right direction will be 
greatly appreciated,
Tom

Dr. R.D. Kane wrote:
> 
> InterCorr/96 - The First Global Internet Corrosion Conference. This is
> the first corrosion conference where technical papers are
> presented, published and archived on the Internet. InterCorr/96 is
> pleased to announce the posting of the first technical society session
> sponsored by ASTM entitled, "Corrosion Tests and Standards: Application
> and Interpretation".
> 
> These papers will be posted over the period June through February, 1997.
> This innovative format provides for unlimited global access of the
> papers from the InterCorr/96 Web Site:
> 
> http://www.clihouston.com
> 
> There have been over 730 registrants from over 30 countries worldwide.
> Registration is complimentary provided by the corporate sponsors
> participating in the first Internet Virtual Tradeshow also found on the
> InterCorr/96 Web Site.
> 
> Dr. R.D. Kane
> 
> --
> CLI International, Inc.
> The Materials & Corrosion Specialists
> http://www.clihouston.com
> 
> CLI's New Specialty Equipment Division offers
> Equipment backed by service and experience.
Bit pretentious postic with a title, we can all do it mate, but some of
us aren't peacocks, we are REAL engineers.
later
JB

Evan Ross wrote:
> 
> I am doing some water electrolysis using stainless steel electrodes,
> distilled water and sulfuric acid found at a hardware store (for battery
> acid) as the electrolyte.  When the reaction proceeds, a pink-red substance
> is produced and turns the entire solution that color.  What is it?  Either
> the sulfuric acid is not pure or something is reacting with the stainless
> steel.  Please help!
I suspect it is a chromium compound, probably the sulfate. There's
probably iron(III)sulfate in solution as well.  To prevent this, use an
insoluble anode. For example, platinum or carbon (from old batteries or
you can try gouging rods (welding suppliers)). 
Good luck,
Wouter.

Stephen Boltinghouse wrote:
> 
> A load of old bollocks about an illegal scam. Try alt.idiot.fuckwitted

Tom Chou wrote:
> 
> Hi all,
> 
> I am looking for DC and low freq conductivities
> of water and weak electrolytic solutions,
> preferably in s/cm^2. I'd also like to know the mobilities/diffusivities
> of H+, OH- and other ions in aqueous solution.
> 
> Related question: suppose I impose and emf
> in an electrolytic solution, can one calculate from
> the above requested information, the viscous (stokes) flow?
> (Assume I have electrodes/geometry that allows passage of fluid
> so a steady state flow can be set up).
> 
> Any pointers in the right direction will be
> greatly appreciated,
> 
> Tom
A device for measuring conductivities is called a Haring Cell, and 
includes a gauze electrode to promote the kind of measurements you want 
to take. I have no idea about whether one can measure flow and diffusion 
based on conductivity, but I'd be interested to hear the answer.
-- Ted Mooney
------------
Visit 'the home page of the finishing industry'
http://www.finishing.com
------------

A micro combination pH electrode is now available which can measure 
samples as small as 20 microliters which is a fraction of a single drop 
of liquid. The electrode fits into 96 well plates, microcentrifuge tubes, 
serum cups, capillary tubes, and NMR tubes.  The probe is all solid state 
with a Teflon body making itvirtually unbreakable.  It has a 1mm tip and 
2 mm body and can be used with any standard pH meter.   For further 
details contact Lazar Research Labs. Inc.  at service@lazarlab.com or see 
the Lazar web site at http://www.lazarlab.com or fax 1-213-931-1434.