# finding boiling points of solutions

posted by
**Sar**
.

What is the boiling point (in degrees Celsius ) of each of the solutions below? For water, Kb = 0.51 (Degrees C * kg)/mol The vapor pressure of water at 45.0C is 71.93 mm Hg.

1. A solution of 15.0g of urea, CH4N2O, in 164 g of water at 45.0 degrees C.

For this one, I've gone 100 + ((.25*1000)/(9.11)) and got 127.44 degrees C..

However, this is incorrect. What am I doing wrong?

2. A solution of 12.0g of LiCl in 164 g of water at 45.0C, assuming complete dissociation.

I've tried something similar but once again with incorrect results.

Any suggestions on what I am doing wrong/need to do?