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How many peaks does this compound have in its 13C spectrum? A 5 B 6 C 7 D 8 - AQA - A-Level Chemistry - Question 29 - 2017 - Paper 3

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How many peaks does this compound have in its 13C spectrum? A 5 B 6 C 7 D 8

Worked Solution & Example Answer:How many peaks does this compound have in its 13C spectrum? A 5 B 6 C 7 D 8 - AQA - A-Level Chemistry - Question 29 - 2017 - Paper 3

Step 1

Identify the Compound's Structure

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Answer

The compound shown in the figure contains a sulfur (S) atom and a benzene ring, which will influence the number of distinct carbon environments.

Step 2

Determine Unique Carbon Environments

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Answer

To find the number of peaks in the 13C spectrum, we need to count the number of unique carbon environments in the molecule. Each unique environment corresponds to a different peak in the spectrum.

Step 3

Analysis of the Compound

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Answer

Upon examining the structure, the compound has a total of eight carbon atoms, and certain carbons are adjacent to each other in similar environments but contribute to distinguishable peaks. The presence of sulfur may also affect the electronic environment of nearby carbon atoms.

Step 4

Conclusion

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Answer

After careful analysis of the unique carbon environments, it has been determined that the compound will have a total of 8 distinct peaks in its 13C NMR spectrum.

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