Glucose reacts with acetic anhydride to form:a)Monoacetateb)Diacetatec)Pentaacetated)HexaacetateCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

It forms glucose pentaacetate. The acetic anhydride esterifies with all the alcohol groups on the glucose ring.

Answer

Answer

Yes option 3  is right, becz glucose molecule contains 5 hydroxy gr.  Which upon reaction with 5 molecules of acetic anhydride forms penta acetate

Answer

Glucose is a monosaccharide, which means it consists of a single sugar unit. Acetic anhydride, on the other hand, is a compound with two acetyl groups (-C(O)CH3) connected by an oxygen atom. When glucose reacts with acetic anhydride, a chemical reaction occurs in which the acetyl groups from the acetic anhydride replace some of the hydroxyl groups (-OH) on the glucose molecule.

The reaction between glucose and acetic anhydride is an example of an acetylation reaction. Acetylation is the process of introducing an acetyl group into a molecule. In this case, the acetyl groups are introduced into the glucose molecule.

The reaction can be represented by the following equation:

Glucose + Acetic Anhydride → Pentaacetate + Acetic Acid

Explanation of the options:

a) Monoacetate: This option is incorrect because the reaction between glucose and acetic anhydride does not result in the formation of a monoacetate. Instead, multiple acetyl groups are added to the glucose molecule.

b) Diacetate: This option is incorrect because the reaction does not result in the formation of a diacetate. Again, the reaction involves the addition of multiple acetyl groups to the glucose molecule.

c) Pentaacetate: This option is correct. The reaction between glucose and acetic anhydride results in the formation of pentaacetate. This means that five acetyl groups are added to the glucose molecule.

d) Hexaacetate: This option is incorrect because the reaction does not result in the formation of a hexaacetate. While six acetyl groups could potentially be added to the glucose molecule, the reaction typically results in the formation of pentaacetate.

In summary, when glucose reacts with acetic anhydride, pentaacetate is formed. This means that five acetyl groups are added to the glucose molecule.

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