Math relationship for b.pt.
elevation and f. pt depression
D
t
f
= I mk
f
k
f
is the freezing pt constant
i = no of particles in solution per formula unit
For molecular species i =1
For NaCl i =
These i values
For K
2
SO
4
i =
assume 100%
For Al
2
(SO
4
)
3
i =
ionization.
For water k
f
= 1.86
o
C/m