In: Chemistry
The boiling point of an aqueous solution is 102.32 °C. What is the freezing point? Constants can be found here.
Boiling point elivation Tb = Kb * m
Boiling poit of water = 100C0
boliling elivation T = 102.32-100 = 2.32C0
Ebulliscopic constant Kb = 0.512 C0/m
m = T/Kb = 2.32/0.512 =4.53m
Elivation of freezing point Tf = m*Kf
= 4.53*1.86 = 8.42C0
normally freezing point of water 100C0 but depresed freezing point = -8.42C0