SP. 9 What is the boiling point of a solution prepared by adding 29.3 g of methol (C20H200) to 0.0590 kg of chloroform?

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SP. 9
What is the boiling point of a solution prepared by adding 29.3 g of methol (C10H₂00) to 0.0590 kg of chloroform?
Transcribed Image Text:SP. 9 What is the boiling point of a solution prepared by adding 29.3 g of methol (C10H₂00) to 0.0590 kg of chloroform?
2A. Boiling Point Elevation
Boiling point elevation occurs when the boiling point of a solution becomes higher than the boiling
point of a pure solvent. The temperature at which the solvent boils is increased by adding any non-volatile
solute. The amount of boiling point elevation can be calculated using the Clausius-Clapeyron
equation and Raoult's law. For an ideal dilute solution:
Boiling Point total (Tb) = Boiling Pointsolvent (Tbsolv) + AT
AT₁ = K₂m
where:
AT = boiling point elevation
Kb = boiling point elevation constant
m = molality of solute
constants for some common solvents:
Solvent
Water
Benzene
Chloroform
Normal Boiling Point, °C
100°C
80.1°C
61.3°C
Bp elevation
const., °C/mol
0.51 °C/mol
2.53 °C/mol
3.63 °C/mol
Transcribed Image Text:2A. Boiling Point Elevation Boiling point elevation occurs when the boiling point of a solution becomes higher than the boiling point of a pure solvent. The temperature at which the solvent boils is increased by adding any non-volatile solute. The amount of boiling point elevation can be calculated using the Clausius-Clapeyron equation and Raoult's law. For an ideal dilute solution: Boiling Point total (Tb) = Boiling Pointsolvent (Tbsolv) + AT AT₁ = K₂m where: AT = boiling point elevation Kb = boiling point elevation constant m = molality of solute constants for some common solvents: Solvent Water Benzene Chloroform Normal Boiling Point, °C 100°C 80.1°C 61.3°C Bp elevation const., °C/mol 0.51 °C/mol 2.53 °C/mol 3.63 °C/mol
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