Search results
The proportionality constant, \(K_f\), is called the molal freezing-point depression constant. It is a constant that is equal to the change in the freezing point for a 1-molal solution of a nonvolatile molecular solute. For water, the value of \(K_f\) is \(-1.86^\text{o} \text{C}/\textit{m}\).
- Freezing Point Depression
The freezing point depression is the difference in...
- Boiling Point Elevation
Calculations involving the molal boiling point elevation...
- Solutions
The LibreTexts libraries are Powered by NICE CXone Expert...
- CK-12 Foundation
Chętnie wyświetlilibyśmy opis, ale witryna, którą oglądasz,...
- Introductory Chemistry
The LibreTexts libraries are Powered by NICE CXone Expert...
- Freezing Point Depression
Molal Freezing and Boiling Point Data. Reference: Lange's Handbook, pps. 11-4 and 11-10 to 11-14.
\(K_f\) is the molal freezing point depression constant for the solvent (in units of °C/m). Like \(K_b\), each solvent has a characteristic value of \(K_f\) (Table \(\PageIndex{1}\)). Freezing point depression depends on the total number of dissolved nonvolatile solute particles, just as with boiling point elevation.
27 lut 2023 · Freezing point depression is a colligative property observed in solutions that results from the introduction of solute molecules to a solvent. The freezing points of solutions are all lower than that of the pure solvent and is directly proportional to the molality of the solute.
Boiling point elevation tutorial. A solution will solidfy (freeze) at a lower temperature than the pure solvent. This is the colligative property called freezing point depression. The more solute dissolved, the greater the effect. An equation has been developed for this behavior.
freezing point depression: The difference in temperature between the freezing point of the pure solvent and that of the solution. molal freezing-point depression constant: A constant that is equal to the change in the freezing point for a 1-molal solution of a nonvolatile molecular solute.
K b is the molal freezing point depression constant, and m is the molal concentration of the solute in the solution. Note that the molal freezing point depression constant, K f , has a specific value depending on the identity of the solvent.
