- #1
yosimba2000
- 206
- 9
How do you derive it? I'm looking for the form J = -D(dC/dX)
From the image, I am assuming left side is of higher concentration. N represents the number of molecules.
My work:
Mass balance
Net molecules in from concentration gradient =
Net = N(x) - N(x+Delta X)
Net concentration in = molecule/volume
= [N(x) - N(x+delta x)] / (A * Delta X)
= dC
And then I'm stuck! I probably went about this totally wrong.
From the image, I am assuming left side is of higher concentration. N represents the number of molecules.
My work:
Mass balance
Net molecules in from concentration gradient =
Net = N(x) - N(x+Delta X)
Net concentration in = molecule/volume
= [N(x) - N(x+delta x)] / (A * Delta X)
= dC
And then I'm stuck! I probably went about this totally wrong.