Simple Distillation Lab

Superior Essays
A mixture of two unknown liquids were obtained. The assigned mixture code was recorded in the notebook (#10). The mixture of the two miscible liquids contained a low boiling point and high boiling point. The method used to separate the two miscible liquids was simple distillation and therefore a simple distillation apparatus was set up. The apparatus included 250mL distillation flask, a 100ml receiving flask, a condenser for water to run through, and a thermometer to monitor the temperature. The measurements of the empty flasks were 37.5120g for the distillation flask and 31.1978g for the receiving flask. The mass of the unknown liquid mixture was determined by transferring the mixture into the distillation flask and subtracting the initial …show more content…
A small window was left open for observing the distillation flask. The stabilized vapor temperature range of the low boiling component (LBM) was recorded. The recording began at the first drop of liquid into to the receiving flask. After a steady drop in temperature, the mixture continued to heat for five minutes to distill any remaining low boiling point compound to complete the distillation. After the completion of the distillation process, the heat was turned off and the glassware was left to cool to room temperature. The final masses were recorded for the distillation and receiving flasks to calculate the mass of each …show more content…
It was then transferred into a 125mL Erlenmeyer flask along with 50mL of dichloromethane. dichloromethane solution was used to dissolve the solid mixture of compounds and separated using a separation funnel. An acid-base reaction proceeded and separated the solution into two layers based on their densities. The top layer contained the aqueous phase (organic acid, RCO2H) and the bottom layer contained the neutral organic phase (RZ). The (RCO2H) was acidified by the addition of hydrochloric acid. After solution had dissolved, it was then placed into a separatory funnel. Approximately 20mL of 1.0M sodium hydroxide solution was added into the separatory funnel where an acid base reaction took place creating layers within the funnel. Inverting and swirling the mixture for about 10 to 20 seconds would help achieve adequate extraction of the organic acid. The funnel was returned to the ring and the miscible mixtures was allowed to completely separate. The top layer was the aqueous phase (RCO2H) and the bottom layer was the organic phase (RZ). Then, each phase was separated into two different labeled beakers. The organic phase was place back into the funnel for an additional extraction using another 20mL of 1.0M sodium hydroxide solution. The aqueous phases were combined in one beaker and the organic was combined in a separate

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