Posted 19 November 2007 - 12:31 PM
Posted 30 January 2008 - 06:58 PM
Posted 30 January 2008 - 10:32 PM
this would work, but how will you calculate the concentration at particular times, AFAIK luminol isn't an acid/alkali (but i could be wrong) so pH is out of the question. A sightly more feasible method would be to pick a constant point in the reaction (eg, when the glow falls to a certain brightness), time how long it took to reach that, then take the reciprocal of time(). This would only worked if the end point was the same for all concentrations.
Posted 10 March 2008 - 09:08 AM
Posted 11 March 2008 - 08:04 PM
But isn't the whole concept of kinetics advanced higher?
I looked into the reaction. It seems the reaction involves OH- ions? This means as reaction progresses pH will fall. You can maybe measure rate of reaction using change in pH?
This website seems to provide some very good background for this reaction, including a very...erm...interesting method of determining rate; you should suggest it to your teacher lol
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