FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 13: Nuclear Magnetic Resonance Spectroscopy

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 21

Multiple Choice

Review LaterAdd Note

Review Later

Which of the following compounds gives a ¹H NMR spectrum consisting of two singlets and a ¹³C NMR consisting of consisting of three signals?

A) only i
B) only iii
C) only ii and iii
D) only ii, iii and iv

Correct Answer

verified

Show Answer

Question 22

Multiple Choice

Review LaterAdd Note

Review Later

Which feature in the ¹H NMR spectrum provides information about the number of types of different protons in a compound?

A) number of signals
B) integral
C) splitting
D) chemical shift

Correct Answer

verified

Show Answer

Question 23

Multiple Choice

Review LaterAdd Note

What is the relative area of the six peaks in a septet in an ¹H NMR spectrum?

How many signals appear in the proton-decoupled ¹³C NMR spectrum of 1,3-dibromobenzene?

What is the splitting of the signal in the ¹H NMR spectrum for the methyl protons of 1-bromo-2-methylpropane?

How many signals appear in the proton-decoupled ¹³C NMR spectrum of the following compound?

What is the appearance of the signal corresponding to the CH₂ protons in the ¹H NMR spectrum of ethyl methyl ether, CH₃CH₂OCH₃?

Identify the ratio of peak areas upon integration of the ¹H NMR spectrum for A, B, and C respectively. Enter the numbers separated by colons.

How many signals appear in the proton-decoupled ¹³C NMR spectrum of the following compound?

For each of the compounds below tell how many signals you would expect the molecule to have in its normal, broadband hydrogen-decoupled ¹³C NMR spectra. Enter the numerical value in the blank provided to the left of the structure. -_______

Identify the compound (C₈H₁₁N) that gives the following ¹H NMR spectrum.

Which of the following combinations of peaks appears in the ¹H NMR spectrum of 2-methylpropane?

How many sets of equivalent protons are there in hexane?

What is the splitting of the signal in the ¹H NMR spectrum for the methyl protons of propane?

How many sets of equivalent protons are there in 2-methylhexane?

Which feature in the ¹H NMR spectrum provides information about the relative number of each type of proton in a compound?

Which of the protons in the following molecule appear at the highest ?-value in the ¹H NMR spectrum? $\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$ O $\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$ || $\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{C}-\mathrm{CH}_{3}$ $\quad$ i $\quad$$\quad$$\quad$ ii $\quad$$\quad$ iii $\quad$$\quad$$\quad$ iv

Which of the protons in the following molecule appear at the highest δ-value in the ¹H NMR spectrum?

Identify the compound (C₈H₁₀O₂) that gives the following ¹H NMR spectrum.

Which C₄H₉Br compound(s) gives a ¹³C NMR spectrum consisting of two signals?