ОН HOH2C ОН ОН II CO2H CO2H Но- -H- H- -HO- HO HO- ČH2OH CH,OH II IV ÇO,H CO2H Но- H- H- -OH H- -OH H- -ОН CH2OH CH2OH

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Identify which of the Fischer projections matches the structure in the box.

  1. A) I
  2. B) II
  3. C) III
  4. D) IV
**Depiction of Stereochemistry and Structural Variants of Tartaric Acid**

1. **Chemical Structure**:
   - The upper box illustrates a chemical structure indicating the stereochemistry of tartaric acid. The molecule features:
     - A top hydroxyl group (HOH₂C group)
     - A middle chiral carbon with an attached hydroxyl group (OH) on a wedge, indicating a particular spatial orientation
     - A carbonyl group (C=O) attached to an OH group at the end

2. **Stereochemical Variants**:
   - The box below exhibits four stereochemical representations, labeled I to IV, to show different configurations of tartaric acid. Each structure consists of:
     - A carboxylic acid group (CO₂H) at the top
     - Adjacent hydroxyl (OH) and hydrogen (H) groups vary in orientation across the four structures
     - A primary alcohol group (CH₂OH) at the bottom

   - **Variant I**:
     - From top to bottom: CO₂H, OH, OH, CH₂OH
   
   - **Variant II**:
     - From top to bottom: CO₂H, H, OH, CH₂OH

   - **Variant III**:
     - From top to bottom: CO₂H, OH, H, CH₂OH

   - **Variant IV**:
     - From top to bottom: CO₂H, H, H, CH₂OH

These diagrams highlight the chirality and potential isomerism of tartaric acid's structures, which affect its physical and chemical properties.
Transcribed Image Text:**Depiction of Stereochemistry and Structural Variants of Tartaric Acid** 1. **Chemical Structure**: - The upper box illustrates a chemical structure indicating the stereochemistry of tartaric acid. The molecule features: - A top hydroxyl group (HOH₂C group) - A middle chiral carbon with an attached hydroxyl group (OH) on a wedge, indicating a particular spatial orientation - A carbonyl group (C=O) attached to an OH group at the end 2. **Stereochemical Variants**: - The box below exhibits four stereochemical representations, labeled I to IV, to show different configurations of tartaric acid. Each structure consists of: - A carboxylic acid group (CO₂H) at the top - Adjacent hydroxyl (OH) and hydrogen (H) groups vary in orientation across the four structures - A primary alcohol group (CH₂OH) at the bottom - **Variant I**: - From top to bottom: CO₂H, OH, OH, CH₂OH - **Variant II**: - From top to bottom: CO₂H, H, OH, CH₂OH - **Variant III**: - From top to bottom: CO₂H, OH, H, CH₂OH - **Variant IV**: - From top to bottom: CO₂H, H, H, CH₂OH These diagrams highlight the chirality and potential isomerism of tartaric acid's structures, which affect its physical and chemical properties.
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