Online Chemistry Labs | Learning Objectives


This experiment introduces students to qualitative testing of different types of carbohydrates with specific structural features. Six unique test reagents are available, and the types of possible chemical reactions with various carbohydrates, such as sugars and starch, with known structural features are discussed. The student is guided to perform a series of test reactions using the reagents on known carbohydrates, and the colors of the resulting reaction products are noted. An efficient flow chart is produced that may then be applied to determine the identity of several unknowns. The student is asked to justify conclusions and to recommend tests to perform on various substances.

Qualitative Analysis of Carbohydrates 

Learning Objectives:

  1. Become familiar with the reactions of test reagents with various carbohydrates.
  2. Be able to develop and use a flow chart to identify types and structural features of carbohydrates
  3. Be able to choose which test to perform after a particular result is observed.
  4. Be able to justify the choice of test and the conclusion derived from the test.
  5. Be able to answer questions about the flow chart and use the flow chart efficiently.