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1) answer to question #16. I think there are two methyl groups but I am unsure.

ID: 818627 • Letter: 1

Question

1) answer to question #16.  I think there are two methyl groups but I am unsure.

2)how many methylene groups are there?  I think the answer is 1 methylene group

3)based on the H NMR the compound must also contain :

      a)an ethyl ether

      b)a methylene connected to aromatic ring

      c) an alochol connected to an aromatic ring

      d) a methylene connected to an alcohol

      e) none of the above.

4) last question, what is the structure? I think the structure is B but i am unsure.

Based on the 1H NMR spectrum below, how many methyl groups are in the unknown compound that gave rise to the spectrum? one two three four zero a methylene connected to an alcohol none of the above Based on the information provided in questions 14-29, the structure of the unknown compound is:

Explanation / Answer

1. 2 because there are two different 3H spectrums.(3H is mentioned twice, it makes it easier to understand, it also means that if there is a s, that means that there are no adjacent hydrogens/ if there is a q, that means that there are 3 adjacent hydrogens to the Carbon (probalby a methyl group)

2. 1 because there is one 2H specrum

3. e none of the above. There are no ethyl ethers, or methylenes, or alcohols in this structures

4. B


Trust your judgement, your thinking on your notes were correct. Goodluck, hope this helps you :)