Question

Crude oil pumped out of the ground may be accompanied by formation water, a solution that contains high concentrations of nacl and other salts. If the boiling point of a sample of formation water is 2.30°c above the boiling point of pure water, what is the molality of particles in the sample?

Answer 1

solution:

the change in the boiling point is given as,

dTbp =2.30°c

elevation constant for the solvent is given by,

kb=0.512°c/m

$molality=\frac{dTBP}{KB\times m}\\=\frac{2.30}{0.512c/m}$

= 4.49m