boiling point of mixtures of ethanol and water
DESCRIPTION
Boiling Point of Mixtures of Ethanol and Water. Group 18: Sanya Dhoundiyal, Jessica Chung and Erik Wolter. Ethanol. What is the relationship of increasing the proportion of water to ethanol on the boiling point of the resulting mixture?. Application. - PowerPoint PPT PresentationTRANSCRIPT
Boiling Point of Mixtures of Ethanol and Water
Group 18: Sanya Dhoundiyal, Jessica Chung and Erik Wolter
Ethanol
What is the relationship of increasing the
proportion of water to ethanol on the boiling point of the resulting mixture?
Application
• Production of moonshine (distillation)• Safety when using alcohol in cooking
VariablesType of Variable
Ratio of moles of water to ethanol
Independent
Boiling Point Dependent
Pressure Control
Volume of the mixture Control
Independent VariableRatio of moles of water to moles of ethanol
Dependent VariableBoiling point of mixture (°C)
Controlled Variables• Pressure• Volume of ethanol and water• Uneven boiling
Materials
Procedure
Setting Up the Three Way Flask and Reflux Condenser
Results
Qualitative Data
Molar Ratios
Data Analysis
Conclusion
Evaluation
Heating
• Heating from pot uneven• Heating of mixture in three way flask
unevenSolution• Electric heater(school does not have one)
Impurities in Ethanol
• Not “pure• Impurities existed
in the Ethanol• Assumed that 5%
remaining in Ethanol was water
Solution• 99.6% ethanol
Density
• Densities were assumed to be that at STPSolution• Weigh the mass of added volumes
Uneven Boiling
• Whether the mixture is or is not homogenous
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