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+ Physical chemistry
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Luxton the Fox

Debye-Huckel Limiting Law

Baba Vickram Aditya Bedi  Follow
OK sorry it's concentration x charge so if I assume the concentration is 1 mol kg -1 because the charge is 1.
All I've been taught about Debye length is that it's proportional to 1/√I but obviously I can't use this. Everything I find online is very confusing: Debye length λD =√εTeff/n0e2
So ε = ε0(permittivity of a vacuum) x εr (relative permittivity).
Would I assume room temperature so T = 298K
I've got that n0 = constant volume density but no idea what that means. and e2 - are these both constants?
Thanks for your help

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Amos Cline  Follow
Quote from:
Unsure of how to do ionic strength, is it conc x charge?

What is the definition of the ionic strength? I find it hard to believe you were taught DH law without introducing this definition first.

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And unsure of which equation to use for Debye length

Whichever contains data that you know and can plug into.

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Dan Vasii  Follow
Quote from:
it's concentration x charge

Nope. Please check the definition.

Wikipedia article on Debye length contains several equivalent formulas, have you seen them?

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