Exam 15: Chirality: the Handedness of Molecules

Progesterone, which is present in humans as a single stereoisomer, has six stereocenters. Human progesterone is one of how many possible stereoisomers for this structure?

Which of the following compounds can exist as a pair of enantiomers?

How many stereoisomers are possible for the following triglyceride? (Include all types of stereoisomerism!)

In the R,S system, which of the following groups has lowest priority?

What are the R/S configurations at the following stereocenters?

Given the compounds cis-1,4-dimethylcyclohexane, and trans-1,4-dimethylcyclohexane, which of the following statements is/are true? (i) these two compounds are related as stereoisomers; (ii) cis-1,4-dimethylcyclohexane is chiral; (iii) trans-1,4-dimethylcyclohexane is chiral.

Which of the following is true of chiral drugs that are administered as single enantiomers?

Which of the following molecules has an R configuration?

Consider the following ball-and-stick model. Atoms other than carbon and hydrogen are indicated by the chemical symbol of the element. What is the correct name for this substance?

Given the compounds 2,3-dimethylpentane and 3-methylhexane, which of the following is true?

Consider the following two ball-and-stick models. Atoms other than carbon and hydrogen are indicated by the chemical symbol of the element. If a solution contains 0.0500 mol of each substance, which of the following describes the solution?

Which of the following correctly describes the relationship between the dextrorotatory/levorotatory system and the +/− system associated with optically active compounds?

Given the compounds 2,3-dimethylpentane and 2,4-dimethylpentane, which of the following is true?

Which of the following is a representation of the enantiomer of the following substance?

In the R,S system, which of the following alkyl groups has highest priority?

How many stereocenters are present in the following carbohydrate?

The actual rotation of a sample measured in a 10 cm cell can be directly reported as the specific rotation if the concentration of the sample is which of the following?

How many stereoisomers exist for the following compound? ?

Which of the following statements is true of dextrorotatory compounds?

Consider the following ball-and-stick model. Atoms other than carbon and hydrogen are indicated by the chemical symbol of the element. The specific rotation of this substance is +2.6°. If 1 g/mL of the following substance is added, what will be the specific rotation of the resulting solution of the two?