Question

Find the boiling point of a solution containing 6.00 g benzene, C6H6, in 3.50 g of napthalene. (Kb of naphthalene = 5.65 oC/m)

Answer 1

 6.og C6H6 x 1mole/78g C6H6 = 0.0769 

0.0769 C6H6/ 35g x 1000g/ 1 kg = 2.19714 

delta Tb = kbm 
= 5.8 (2.19714) 
=12.74 
12.74 + 217.9 = 230.64degree celcius