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Solvent. Density (g cm-3) Boiling point (°C) K b (°C⋅kg/mol) Freezing point (°C) K f (°C⋅kg/mol) Data source. Aniline. 184.3.
The curve between the critical point and the triple point shows the benzene boiling point with changes in pressure. It also shows the saturation pressure with changes in temperature. At the critical point there is no change of state when pressure is increased or if heat is added.
It is: Δt = i K b m. Δt is the temperature change from the pure solvent's boiling point to the boiling point of the solution. It is equal to two constants times the molality of the solution. The constant K b is actually derived from several other constants and its derivation is covered in textbooks of introductory thermodynamics.
Boiling-point elevation is the phenomenon whereby the boiling point of a liquid (a solvent) will be higher when another compound is added, meaning that a solution has a higher boiling point than a pure solvent. This happens whenever a non-volatile solute, such as a salt, is added to a pure solvent, such as water.
Formula: C 6 H 6. Molecular weight: 78.1118. IUPAC Standard InChI: InChI=1S/C6H6/c1-2-4-6-5-3-1/h1-6H. IUPAC Standard InChIKey: UHOVQNZJYSORNB-UHFFFAOYSA-N. CAS Registry Number: 71-43-2. Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file. The 3d structure may be viewed using Java or Javascript.
where \(\Delta{T_b}\) is the boiling point elevation, \(K_b\) is the boiling point elevation constant, and m is the molality (mol/kg solvent) of the solute. Exercise A solution is prepared when 1.20 g of a compound is dissolved in 20.0 g of benzene.
Smith, E.R., Boiling points of benzene, 2,2,3-trimethylbutane, 3-ethylpentane, and 2,2,4,4-tetramethylpentane within the range 100 to 1,500 millimeters of mercury, J. RES. NATL. BUR. STAN., 1941, 26, 2, 129-17, https://doi.org/10.6028/jres.026.004.
