D-mannose exists entirely in pyranose form. The specific rotation for the - anomer is 29°…
Chemistry · JEE Main · NTA Exams — Biomolecules
D-mannose exists entirely in pyranose form. The specific rotation for the \(\pi-\)anomer is 29° and that of \(\beta-\)anomer is -17°. The specific rotation of the equilibrium mixture is 14°. Calculate the percentage of each anomer in the equilibrium mixture and select the correct statement:
- Percentage of \(\text { II }\)-anomer is 67.4%.
- Percentage of \(\beta\)-anomer is 38.5%.
- Percentage of \(\text { II }\)-anomer is 87.3%.
- Percentage of \(\beta\)-anomer is 67.4%.
Answer
(A) Percentage of II -anomer is 67.4%.
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