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Boiling point (°C) K b (°C⋅kg/mol) ... 80.1 2.65 5.5 –5.12 K b & K f [2] ... Freezing-point depression; Boiling-point elevation; References
In thermodynamics, the ebullioscopic constant K b relates molality b to boiling point elevation. [1] It is the ratio of the latter to the former: = i is the van 't Hoff factor, the number of particles the solute splits into or forms when dissolved. b is the molality of the solution.
The result is that in dilute ideal solutions, the extent of boiling-point elevation is directly proportional to the molal concentration (amount of substance per mass) of the solution according to the equation: [2] ΔT b = K b · b c. where the boiling point elevation, is defined as T b (solution) − T b (pure solvent).
This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture.
N 2 77.355 K (−195.795 °C) O 2 90.188 K (−182.962 °C) ... Unless noted, all values refer to the normal boiling point at standard pressure (101.325 kPa). References
Freezing point depression and boiling point elevation In chemistry , colligative properties are those properties of solutions that depend on the ratio of the number of solute particles to the number of solvent particles in a solution, and not on the nature of the chemical species present. [ 1 ]
CCl 4 + 2 HF → CCl 2 F 2 + 2 HCl CCl 4 + 3 HF → CClF 3 + 3 HCl CCl 4 + 4 HF → CF 4 + 4 HCl. This was once one of the main uses of carbon tetrachloride, as R-11 and R-12 were widely used as refrigerants. An alcohol solution of potassium hydroxide decomposes it to potassium chloride and potassium carbonate in water: [11] CCl 4 + 6 KOH → 4 ...
The van 't Hoff factor i (named after Dutch chemist Jacobus Henricus van 't Hoff) is a measure of the effect of a solute on colligative properties such as osmotic pressure, relative lowering in vapor pressure, boiling-point elevation and freezing-point depression.