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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.
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Boiling Point of Mixtures of Ethanol and Water Group 18: Sanya Dhoundiyal, Jessica Chung and Erik Wolter
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
Independent Variable Ratio of moles of water to moles of ethanol
Dependent Variable Boiling point of mixture (°C)
Controlled Variables • Pressure • Volume of ethanol and water • Uneven boiling
Heating • Heating from pot uneven • Heating of mixture in three way flask uneven • Solution • 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 STP Solution • Weigh the mass of added volumes
Uneven Boiling • Whether the mixture is or is not homogenous
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