Which of the following solutions would have the highest value for boiling point?

Question

Which of the following solutions would have the highest value for boiling point?

A. 0.20 M NaCl

B. 0.10 M CaCl2

C. 0.50 M CH3OH

D. 0.30 M CaCl2

E. 0.10 M CH3COCH3

Answer 1

The boiling point will go up as a function of the molality (moles / kg solvent) and the number of particles.

A. 0.20 M NaCl - 2 particles x 0.2 = 0.4

B. 0.10 M CaCl2 - 3 particles x 0.1 = 0.3

C. 0.50 M CH3OH - 1 particle x 0.5 = 0.5

D. 0.30 M CaCl2 - 3 particles x 0.3 = 0.9

E. 0.10 M CH3COCH3 - 1 particle x 0.1 = 0.1

D. 0.30 M CaCl2 will produce a solution with the highest boiling point.