BOILING-POINT ELEVATION IN A SOLUTION
Model No. HV-EXP2436
BOILING-POINT ELEVATION IN A SOLUTION The boiling point of a solution is always higher than that of pure solvent. A special apparatus enables to determine how the difference of temperature (boiling-point elevation) depends on the concentration of solute. TRAINING PROGRAM • Raoult’s law • Henry’s law • ebullioscopic constant • chemical potential • Gibbs-Helmholtz equation • concentration ratio • degree of dissociation OBJECTIVES • measuring boiling-point elevation in water versus the concentration of salt, urea and of hydroquinone • determining the relationship existing between boiling-point elevation and number of particles • determining the molar mass of solute from the ratio between boiling-point elevation and concentration COMPONENTS • apparatus for studying boiling-point elevation • heating shell for fl asks • power controller • glassware for tests • thermometer.
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