Spectroscopic Techniques in Organic Chemistry
Chemistry ⇒ Carbon and Organic Chemistry
Spectroscopic Techniques in Organic Chemistry starts at 11 and continues till grade 12.
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See sample questions for grade 11
A compound has a molecular ion peak at m/z = 58 in its mass spectrum. What is its molecular mass?
A student observes two signals in the 1H NMR spectrum of a compound. What does this indicate about the hydrogen environments in the molecule?
Calculate the number of signals expected in the 1H NMR spectrum of ethane (C2H6).
Describe the fingerprint region in an IR spectrum.
Explain the principle of mass spectrometry in one or two sentences.
A compound has a molecular ion peak at m/z = 58 in its mass spectrum. What is its molecular mass?
A student observes two signals in the 1H NMR spectrum of a compound. What does this indicate about the hydrogen environments in the molecule?
A student records an IR spectrum and observes a sharp peak at 3300 cm-1. Which functional group is most likely present?
(1) Alkane
(2) Alkyne
(3) Carboxylic acid
(4) Ester
A compound shows a strong absorption at 2250 cm-1 in its IR spectrum. Which functional group is likely present?
(1) Nitrile
(2) Alcohol
(3) Alkene
(4) Ether
A student records an IR spectrum and observes a sharp peak at 3300 cm-1. Which functional group is most likely present?
(1) Alkane
(2) Alkyne
(3) Carboxylic acid
(4) Ester
Which of the following functional groups absorbs strongly near 1720 cm-1 in an IR spectrum?
(1) Aldehyde
(2) Alkene
(3) Amine
(4) Ether
Which of the following functional groups typically shows a strong absorption near 1700 cm-1 in an IR spectrum?
(1) Alcohol
(2) Ketone
(3) Alkene
(4) Amine
In mass spectrometry, the x-axis of the spectrum is labeled as ______.
In UV-Vis spectroscopy, the absorption of light is due to the excitation of ______ in a molecule.
In UV-Vis spectroscopy, the intensity of absorption is directly proportional to the ______ of the absorbing species.
The absorption maximum in UV-Vis spectroscopy is called ______.
True or False: Infrared (IR) spectroscopy can be used to identify functional groups in organic molecules.
True or False: The base peak in a mass spectrum is always the molecular ion peak.
True or False: The chemical shift in NMR is measured in parts per million (ppm).
True or False: The number of signals in a 1H NMR spectrum indicates the number of different types of hydrogen environments in a molecule.
