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JEE Main Chemistry question

ChemistryBiomoleculesJEE Main

The optical rotation of -D-fructose is and that of its -form is . The equilibrium mixture of these anomers has an optical rotation of . What is the % of -form (up to one decimal place) in its equilibrium mixture?

Answer: 36.6

Solution

Let be the percentage of the -form at equilibrium, so is the percentage of the -form. Using the weighted-average

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Question ID VK-151235