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5 Written questions

4 Multiple choice questions

  1. mixture of compounds to be separated is introduced onto the column that is packed with a stationary solid. The solid is continuously washed by a flow of solvent (mobile) passing through the column. The continuous flow of solvent throught the column and the interaction b/w the solid compounds in the mixture, separates the mixture as it passes down the colum.
  2. Separation 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.
  3. A technique that uses a solid stationary phase and a moving liquid phase to separate the components of a mixture.
  4. condenser such that vapor over a boiling liquid is condensed and flows back into the vessel to prevent its contents from boiling dry

4 True/False questions

  1. recrystallizationa process in which an applied vacuum draws a solution through filter paper held in a Buchner funnel.

          

  2. Desiccatorcontainer that can be sealed from the atmosphere and holds a drying agent

          

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

          

  4. RefluxThe continual boiling and condensing of a reaction mixture to ensure that the reaction takes place without the contents of the flask boiling dry.

          

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