Exam 4: Isomers: the Arrangement of Atoms in Space

A newly isolated natural product was shown to be optically active.If a solution of 2.0 g in 10 mL of ethanol in a 50 cm tube gives a rotation of +2.57°,what is the specific rotation of this natural product?

How many asymmetric centers are present in the compound shown below?

What type of isomers are CH₃CH₂OCH₃ and CH₃CH₂CH₂OH?

Is the molecule shown below chiral or achiral?

Which of the following terms best describes the pair of compounds shown: enantiomers,diastereomers,or the same compound?

Label the molecule shown as chiral or achiral.

The compound CH₃CHClCH₂CH=CHCH₂CH₃ contains only one asymmetric center.Explain why it has four stereoisomers.

Is the molecule shown chiral? Is it a meso compound?

Is the molecule shown chiral? Is it a meso compound?

Give the complete name(s)of the following compound.

Twenty grams of a compound was dissolved in 100 mL of solvent and gave an observed rotation of -20 degrees.The sample tube is 4 dm long.Calculate the specific rotation.

How many asymmetric centers are present in a molecule of 2,4,6-trimethylheptane?

What is the relationship between the following compounds?

Which of the statements below correctly describes an achiral molecule?

Which of the following groups has the highest priority using the Cahn,Ingold,Prelog rules?

Label each asymmetrical carbon in the compound below as R or S.

Draw the structure of (S)-1-bromo-1-chloropropane.Take particular care to indicate three-dimensional stereochemistry detail properly.

Structure of pseudoephedrine,a nasal decongestant is shown below.Draw a diastereomer.

Which of the following compounds has an R configuration?

What is the relationship between the structures shown below?