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5 Written questions

4 Multiple choice questions

  1. useful to separate two liquids w/ vastly diff. boiling points at least 20 degrees C.
  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. container that can be sealed from the atmosphere and holds a drying agent
  4. 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.

4 True/False questions

  1. Subliminationcontainer that can be sealed from the atmosphere and holds a drying agent

          

  2. Fractional DistillationThe separation of the components in a liquid mixture into fractions which differ in boiling point (and hence chemical composition) by means of distillation, typically using a fractionating column.

          

  3. Column Chromatographymixture 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.

          

  4. Reflux condensercondenser such that vapor over a boiling liquid is condensed and flows back into the vessel to prevent its contents from boiling dry