If (S)-glyceraldehyde has a specific rotation of -8.7°, what is the specific rotation of (R)- glyceraldehyde? A) -8.7° B) +8.7° C) 0.0° D) cannot be determined from the information given

Answer: +8.7° (B)

Explanation: Enantiomers have equal magnitudes of specific rotation but opposite signs. Since (S)-glyceraldehyde is −8.7°, its enantiomer (R)-glyceraldehyde is +8.7° (assuming the same measurement conditions).