Comparison of freezing point lowering by ionic electrolytes with lowering by
nonelectrolytes of the same concentration.
|
Ionic type of
electrolyte |
Values
of i for Dtfp
= ikfm 0.100m
0.0500m
0.0100m 0.00500m |
Theoretical
limita for i |
|||
|
NaCl |
1.87 |
1.89 |
1.93 |
1.94 |
2 |
|
KCl |
1.86 |
1.88 |
1.94 |
1.96 |
2 |
|
MgSO4 |
1.42 |
1.43 |
1.62 |
1.69 |
2 |
|
K2SO4 |
2.46 |
2.57 |
2.77 |
2.86 |
3 |
aThe theoretical limit of the ratio of the Dtfp for an electrolyte to the Dtfp for a nonelectrolyte is equal to the number of moles of ions that can form per mole of electrolyte.