Cellulose upon acetylation with excess a...

Cellulose upon acetylation with excess acetic anhydride/`H_(2)SO_(4)` (catalytic) gives cellulose triacetate whose structure is

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The correct Answer is:

Cellulose has `beta-` glycosidic linkages between `C_(1)` of one glucose unit and `C_(4)` of the other. It has three free OH groups at 2, 3, 6 positions and hence Oac group apears at `C_(2), C_(3) and C_(6)` positions.

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Cellulose upon acetylation with excess anhydride//H_(2)SO_(4) (catalytic) gives cellulose triacetate whose structure is:

Cellobiose upon acetylation with excess acetic anhydride / H_(2)SO_4 (catalytic) gives triacetate whose structure is_______.

On acetylation with acetic anhydride, glucose gives

hexaacetate

pentaacetate

tetraacetate

triacetate