Draw the Fischer projection for L-galactose (remember, it is the enantiomer of D
ID: 923379 • Letter: D
Question
Draw the Fischer projection for L-galactose (remember, it is the enantiomer of D-galactose so every chiral center has to be the opposite), and draw the Haworth structure with a 6-member ring and the hydroxyl group oriented alpha at the anomeric center. The heat of combustion (DeltaH_c) for alpha-D-glucose Is -670 kcal/mol. and that of beta-D-fructose is -671/mol The heat o combustion of the disaccharide sucrose is -1348 kcal/mol. What is the DeltaH tor the hydrolysis of sucrose into glucose and fructose based on these numbers? is this hydrolysis exothermic or endothermic? As part of your answer, write all four reactions in balanced form with the DeltaH shown. You can use molecular formulas, but label which sugar they apply to. Draw the non-cyclized form of ribose as a line structures with wedges to show the stereochemistry, as a Fischer projection, and as the 5-member ring cyclic form (Haworth structure) with the beta anomer. Show the structures of the products of the following reactions using Fischer projections. the NaBH_4 reduction of galactoseExplanation / Answer
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