9.Which of the following Fischer projections represents(2R.3R)-tartaric acid? A) CO2H COZH B) CO2H -OH 0H CO2H CO2H CO2H CO2H -H H- OH 10.Which of the following statements is not true? A)Enantiomers have identical properties except in chiral environments or with B) 8 Enantiomers exhibit equal and opposite optical rotations. E)All of the above are true. Ans:C Page4Page 4 9. Which of the following Fischer projections represents (2R,3R)-tartaric acid? A) CO2H CO2H H OH H OH B) CO2H CO2H HO H H OH C) CO2H CO2H HO H HO H D) CO2H CO2H H OH HO H E) none of the above Ans: B 10. Which of the following statements is not true? A) Enantiomers have identical properties except in chiral environments or with plane-polarized light. B) Reactions involving only achiral or racemic materials must produce achiral or racemic products. C) Diastereomers have identical properties in all environments. D) Enantiomers exhibit equal and opposite optical rotations. E) All of the above are true. Ans: C