Podcast
Questions and Answers
How would you use 1H NMR spectroscopy to distinguish between the following compounds?
How would you use 1H NMR spectroscopy to distinguish between the following compounds?
- Compound I will have a doublet, a septet, two triplets, and a sextet.
- The compounds will have different numbers of signals.
- Compound I will have two doublets, two triplets, and a multiplet. (correct)
- Compound II will have a doublet, a multiplet, a quartet, and a triplet.
Which of the structures shown is consistent with a compound with a molecular formula C8H15ClO3?
Which of the structures shown is consistent with a compound with a molecular formula C8H15ClO3?
- II III IV I (correct)
- III I V IV II
- II III I V
- None of these
Which one of the given compounds has the lowest wavenumber for its carbonyl absorption?
Which one of the given compounds has the lowest wavenumber for its carbonyl absorption?
- V (correct)
- IV
- III
- I
Why would the absorption in a 13C NMR spectrum become a narrow peak instead of a broad peak?
Why would the absorption in a 13C NMR spectrum become a narrow peak instead of a broad peak?
Why does bromine produce M+ and (M+2)+ peaks of equal intensity on a mass spectrum?
Why does bromine produce M+ and (M+2)+ peaks of equal intensity on a mass spectrum?
Which compound is consistent with showing absorptions at 1640 cm-1, 2950 cm-1, and 3050 cm-1 on an IR spectrum?
Which compound is consistent with showing absorptions at 1640 cm-1, 2950 cm-1, and 3050 cm-1 on an IR spectrum?
Which compound among the options has a molecular formula C9H10O2 based on the 1H NMR spectrum provided?
Which compound among the options has a molecular formula C9H10O2 based on the 1H NMR spectrum provided?
In the 1H NMR spectrum shown, which compound is most likely to display a Jac value of 6.5 Hz?
In the 1H NMR spectrum shown, which compound is most likely to display a Jac value of 6.5 Hz?
For the compound with a molecular formula C5H11NO, which absorption peak would be expected in the IR spectrum?
For the compound with a molecular formula C5H11NO, which absorption peak would be expected in the IR spectrum?
Among the compounds provided, which one is most likely to exhibit only two singlets in its 1H NMR spectrum?
Among the compounds provided, which one is most likely to exhibit only two singlets in its 1H NMR spectrum?
