Chiral Compounds Quiz

What is the definition of a chiral compound?

• An object that is superimposable on its mirror image

• A molecule with a carbon atom with 4 different substituents

• A molecule with a plane of symmetry

• A object that is non-superimposable on its mirror image

Which of the following compound is meso?

• cis-1,3-dimethylcyclohexane

• trans-1,3-dimethylcyclohexane

• (+)-2-methylbutane

• 1-bromo-3-methylcyclohexane

Which of the following compound is chiral?

• 1-bromobutane

• 2-bromobutane

• 2-bromo-2-methylbutane

• 3-bromopentane

Which of the following statements is incorrect?

• The specific rotation of 2 diastereomers has a different absolute value

• (+) in front of a chiral compound means that its absolute configuration is R

• A racemic mixture of a chiral compound contains equal amount of (+) and (-) compound

• The (+) and (-) stereoisomer of the same chiral compound will rotate polarized light equally but in opposite directions

What is the enantiomer of the (1S,3S)-1-bromo-3-methylcyclohexane?

• (1S,3R)-1-bromo-3-methylcyclohexane

• (1R,3S)-1-bromo-3-methylcyclohexane

• (1R,3R)-1-bromo-3-methylcyclohexane

• (1S,3S)-1-bromo-3-methylcyclohexane is not

How many chiral centers does the 2,4-dibromo-1,1,4-trimethylcyclohexane have?

• 0

• 1

• 2

• 3