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5 Written questions

4 Multiple choice questions

  1. The continual boiling and condensing of a reaction mixture to ensure that the reaction takes place without the contents of the flask boiling dry.
  2. An analytical technique which separates mixtures based on their distribution between a stationary liquid phase and a moving gas phase.
  3. condenser such that vapor over a boiling liquid is condensed and flows back into the vessel to prevent its contents from boiling dry
  4. container that can be sealed from the atmosphere and holds a drying agent

4 True/False questions

  1. Simple Distillationuseful to separate two liquids w/ vastly diff. boiling points at least 20 degrees C.


  2. Vacuum Filtrationa process in which an applied vacuum draws a solution through filter paper held in a Buchner funnel.


  3. Thin layer ChromatographyA technique that uses a solid stationary phase and a moving liquid phase to separate the components of a mixture.


  4. recrystallizationSeparation technique used to purify particles of interest from a mixture of solids. Mixture is dissolved in saturating amounts in warm solvent. As the solution cools, the pure substance crystallizes while impurities remain in solution.