December 13, 2019, 07:47:04 AM
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Topic: CuCl2 Absorbance  (Read 187 times)

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Offline Ebelvonde

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CuCl2 Absorbance
« on: November 25, 2019, 03:24:01 PM »
I've done an absorbance plot for CuCl2 at different concentrations. It's basically linear as expected, but slightly curves above and below 0.1M (I did a dilution series from 0-0.2M) is this because of the solvent used (water and some glycerol) or is because the equilibrium is shifted to produce more/less Cu2+ ions? I've looked but can't find anything concrete. Thanks!

Offline Corribus

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Re: CuCl2 Absorbance
« Reply #1 on: November 25, 2019, 03:27:17 PM »
What is your optical density at the concentrations in question, and which way is the curvature?
The Beer-Lambert law breaks down at high concentrations.
What men are poets who can speak of Jupiter if he were like a man, but if he is an immense spinning sphere of methane and ammonia must be silent?  - Richard P. Feynman

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