QUIZ 1. How many carbon atoms and how many double bonds are there in the benzene ring? a. Five carbon atoms and two double bonds b. Six carbon atoms and two double bonds c. Six carbon atoms and three double bonds d. Eight carbon atoms and three double bonds Answer: c. Benzene is a simple six-carbon ring associated with three double bonds that resonate with one another in what is a relatively stable molecule. 2. Which carbon atoms in the benzene structure have resonance? a. The first and second carbon atoms b. The first and fourth carbon atoms c. None of the carbon atoms d. All of the carbon atoms Answer: d. Resonance exists between all of the bonds of the benzene molecule so that the entire molecule’s carbon atoms have resonance. 3. A benzene molecule is considered an ortho molecule. Where are the side chains located? a. On the 1 and 2 carbon atoms b. On the 1 and 3 carbon atoms c. On the 1 and 4 carbon atoms d. On the 1 and 5 carbon atoms Answer: a. There is an ortho, meta, and para system that dictates where the side chains are located. The 1, 2-carbon side chains on the benzene molecule indicate an ortho configuration.
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