Write chemical reactions to show that open structure D-glucose contains the following:
(i) Straight chain
(ii) Five alcohol groups
(iii) Aldehyde as carbonyl group
(i) Glucose reacts with HI to form n - hexane indicating that the six carbons are linked in straight chain.
(ii) Glucose gives pentacetate derivative on acetylation with acetic anhydride. This confirms the presence of five -OH groups.
(iii)
This indicates that the carbonyl group is present as an aldehyde group.