During the acetaminophen synthesis experiment, the purpose of the recrystallizat

Question

During the acetaminophen synthesis experiment, the purpose of the recrystallization step was to: improve the purity of acetaminophen product. decrease the % yield. increase the % yield. waste valuable lab time. 4.54g of maltose is dissolve in water containing HCl(very strong acid. causing the disaccharide to bread apart into two molecules of glucose. What is the theoretical yield of glucose produced in this reaction? 2.39 g 9.08 g 4.78 g 4.31 g A reducing sugar indicates the presence of what? an aldehyde glucose a metal ion a ketone

Explanation / Answer

24. the crystallization is done to improve the purity of acetaminophen product

25.180.15g/mol= glucose molecular weight, 342.3g/mol= molecular weight of maltose

yeild= ( m.wt of product/ m.wt of starting material)*wt of starting material

= (180.15/ 342.3)*4.54

= 2.39 g

26. reducing sugar acts as reducing agent , because it has a free aldehyde group or free ketone group.sugar is classified as reducing sugar , if it has open chainform with an aldehyde group.

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