TBR Gen chem seems to ask a lot of questions on the boiling point and freezing points of solutions but I dont think it was ever explained in the book. Can someone explain this concept? thanks 😀
boiling point (BP) is when the vapor pressure of a fluid equals atmospheric pressure
if you are referring to colligative properties it is basically when you add impurities to a fluid it elevates the boiling point aka boiling point elevation
for example water if you add NaCl to it, it will elevate the boiling point by an amount based on the formula:
i x K x m = change in temperature of the BP
i = the number of solute particles that is added (for NaCl it is 2 because it dissociates into Na+ and Cl-)
K = is a constant for the particular fluid that they will provide
m = is the molality of the solution (moles of solute/kg of solvent)
the change in temperature is added to the normal BP of water and you get the new BP of the solution
Freezing point depression is the opposite where the change in temperature is subtracted from the normal freezing point hence Freezing point depression.
