Stereochemistry and Stereoisomers
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Questions and Answers

What is the term for a compound that can rotate a plane of polarized light?

  • Optically active (correct)
  • Optically inactive
  • Chiral
  • Achiral

What is the direction of rotation of light by a dextrorotatory substance?

  • Neither clockwise nor counterclockwise
  • Counterclockwise
  • Clockwise (correct)
  • Both clockwise and counterclockwise

Which of the following is an example of an optically active compound?

  • Ethanol
  • Benzene
  • Glyceraldehyde (correct)
  • Methane

What is the label for a levorotatory substance?

<p>(-) (A)</p> Signup and view all the answers

How many chiral centers does D-Glyceraldehyde have?

<p>1 (D)</p> Signup and view all the answers

What is the study of the spatial arrangement of molecules?

<p>Stereochemistry (B)</p> Signup and view all the answers

What is the main difference between stereoisomers?

<p>Their spatial arrangements (C)</p> Signup and view all the answers

What is the minimum requirement for a molecule to exhibit stereoisomerism?

<p>One asymmetric carbon atom (C)</p> Signup and view all the answers

What are the two types of stereoisomers?

<p>Cis-trans isomers and optical isomers (B)</p> Signup and view all the answers

What is the term for a pair of stereoisomers that are mirror images of each other?

<p>Enantiomers (A)</p> Signup and view all the answers

How are enantiomers designated?

<p>By D- or L- at the start of the name (A)</p> Signup and view all the answers

What is the number of asymmetric carbon atoms in glyceraldehyde?

<p>One (C)</p> Signup and view all the answers

What is the relationship between D-glyceraldehyde and L-glyceraldehyde?

<p>They are mirror images of each other (C)</p> Signup and view all the answers

What do the 'D' and 'L' designations represent in glyceraldehyde?

<p>The absolute configuration of the asymmetric carbon atom (D)</p> Signup and view all the answers

What is the term for sugars that differ in configuration at only a single asymmetric carbon atom?

<p>Epimers (C)</p> Signup and view all the answers

Which of the following pairs of sugars are epimers?

<p>D-glucose and D-galactose (A)</p> Signup and view all the answers

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