Question 1 [1.5 pts] How many unique signals will be exhibited in the proton NMR

Question

Question 1 [1.5 pts] How many unique signals will be exhibited in the proton NMR spectrum of compound A?*

Question 2 [1.5 pts] How many unique signals will be exhibited in the proton NMR spectrum of compound B?*

Question 3 [1.5 pts] Which one of the following statements is correct?

? Protons HC and HD are chemically equivalent

? Protons HC and HD are not chemically equivalent

Question 4 [1.5 pts] Which one of the following statements is correct?

? Protons HE and HF are chemically equivalentq

? Protons HE and HF are not chemically equivalent

Question 5 [1.5 pts] What type of proton NMR signal will proton HG give rise to?*
Question 6 [1.5 pts] What type of proton NMR signal will proton HJ give rise to?*

Explanation / Answer

1) 17 signals

2) 11 signals

3) protons Hc and Hd are not chemically equivalent

4) protons He and Hf are chemically equivalent

5) Hg leads to peak signal

6) Hj leads to TMS

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