Re-use of this resource is governed by a Creative Commons Attribution-
NonCommercial-ShareAlike 4.0 International
https://creativecommons.org/licenses/by-nc-sa/4.0/
creative commons DoITPoMS logo
0 1
CL
Cs
1−f
df
dCL
f
 
We are solidifying a bar from a melt of concentration C, with a partition coefficient, k. There is no diffusion in the solid, and complete mixing in the liquid.