Steam Distillation and Optical Rotation of Limonene

Jun 29th, 2015
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Tam HoLab Partner: Urusha LamaNovember 1, 2013STEAM DISTILLATIONOPTICAL ROTATIONI. AbstractSteam distillation is another method of separating mixture of liquids. However, unlike simple and fractional distillation, steam distillation is able to separate mixture of two immiscible liquids. The vapor pressure of the mixture is the sum of vapor pressures of all the components. The vapor pressure of each individual component is independent from each other, while dependent only on the temperature. The vapor pressure of a component is directly proportional to the moles of vapor of that component.Ptotal = PZ + PYOptical rotation is a property that can tell the purity of an optically active compound. Some specific compounds whose molecular structures are chiral are capable of rotating a plane of polarized light. The specific rotation []D is measured as followed:[]D = In this experiment we will purify limonene a water insoluble substance and then determine the degree of purity by optical rotation. At the start, mix 12mL of limonene with 68mL of water together. The setting up of steam distillation is similar to simple distillation. The only difference is that we have sep

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