LAB 4 : PART B Hydrolysis of a Disaccharide

Sucrose : A Disaccharide

PART B: You will be modeling the dehydration synthesis and hydrolysis of a disaccharide, sucrose.

              USE WEB RESOURCES!  Use MolView for imaging Sucrose

1. Define : dehydration synthesis, hydrolysis, disaccharide, Sucrose, hydroxyl, synthesis.

2. MODELS: You have made Glucose and Fructose.  Now, you will be joining them together to make Sucrose.  What is formed when a dehydration of any kind occurs?  WATER!   So, you will remove one hydrogen atom from Glucose and one hydroxyl   ( -OH)  from Fructose.  This will form water, H2O .

When Glucose and Fructose join, they form SUCROSE, which is table sugar.

   A. Draw the structural formulas for this reaction.  Label glucose, fructose, water and sucrose. Label Reactants and Products.  Label this as the dehydration synthesis of sucrose.

    A.     Dehydration Synthesis of Sucrose :

             Glu + Fru      ->   H2O  + Sucrose

    B. Describe Or Draw the Hydrolysis of Sucrose.  Be sure to explain the products and reactants.

  This is the lab document which may help: Model Of Disaccharide