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.