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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?

(-) Signup and view all the answers

How many chiral centers does D-Glyceraldehyde have?

1 Signup and view all the answers

What is the study of the spatial arrangement of molecules?

Stereochemistry Signup and view all the answers

What is the main difference between stereoisomers?

Their spatial arrangements Signup and view all the answers

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

One asymmetric carbon atom Signup and view all the answers

What are the two types of stereoisomers?

Cis-trans isomers and optical isomers Signup and view all the answers

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

Enantiomers Signup and view all the answers

How are enantiomers designated?

By D- or L- at the start of the name Signup and view all the answers

What is the number of asymmetric carbon atoms in glyceraldehyde?

One Signup and view all the answers

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

They are mirror images of each other Signup and view all the answers

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

The absolute configuration of the asymmetric carbon atom Signup and view all the answers

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

Epimers Signup and view all the answers

Which of the following pairs of sugars are epimers?

D-glucose and D-galactose Signup and view all the answers