QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
If (S)-glyceraldehyde has a specific rotation of - 8.7 o , what is the specific rotation of (R)-glyceraldehyde?
A) - 8.7 o
b) + 8.7 o
c) 0.0 o
d) it cannot be determined with the information given
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Answer
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Step 1Let's solve this step by step:
Step 2: Understand Specific Rotation
Specific rotation is an optical property that describes how a chiral molecule rotates plane-polarized light. For enantiomers (mirror image molecules), specific rotations have equal magnitude but opposite signs.
Final Answer
Key Insight: Enantiomers always have specific rotations of equal magnitude but opposite signs.
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