Question

4. Name the functional group that links two monosaccharides in a disaccharide. Would that be the same kind of functional group linking monosaccharides in long-chain polysaccharides like amylose? Postlab Questions 1a) Formic acid or methanoic acid is completely soluble in water. Draw the secondary interaction of formic acid and water molecules. Be sure to specify what interaction takes place (e e dipole-dipole bond etc) n sodium hydroxide, NaoH is added to formic acid, the pH raised to 12. What happened to the acid in the solution? Hint! Draw the structure of this newly formed product. c). Hydrochloric acid, HCl is now added to the solution in part (b) and the pH is lowered to 2. Draw the structural formula of the newly formed product in this acid solution. 2. "Compare the differences in characteristics odor between carboxylic acid and esters". Carboxylic acids are noted for their sour disagreeable Odors. Ester has sweat and pleasant odors often associated with fruits 3. Butyric acid has a putric odor, like rancid butter. If you got some of this material on your hands, h could you remove the odor? (Butyric acid has limited solubility in water, so you cannot rinse it off)

Answer 1

Ans 4 :

The functional group that links the two monosaccharide units in a disaccharide molecule is an acetyl functional group. These two units are joined together by a glycosidic linkage.

Yes this is the same functional group that links the monosaccharide units in the long polysaccharide molecules such as amylose.