chem chapter 8 Flashcards

1
Q

What is an NMR spectroscopy?

A

Nuclear magnetic resonance (NMR) spectroscopy is the study of molecules by recording the interaction of radiofrequency (Rf) electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field.

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2
Q

What is IR spectroscopy?

A

Infared spectroscopy is the spectroscopy that deals with the infrared region of the electromagnetic spectrum, that is light with a longer wavelength and lower frequency than visible light.

it tells us the functional groups in the molecule and fingerprint region

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3
Q
A

the fingerprint region is a unique identifier

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4
Q

what is a base peak?

A

The base peak represents the most abundant species and so is assigned a relative abundance of 100

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5
Q

What does C13 NMR give?

A

It gives number of the Carbon environments

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6
Q

What does H1 NMR give?

A

It gives the number of hydrogen environments

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7
Q

what does H NMR spectroscopy show?

A

HNMR spectroscopy shows peaks in a low resolution

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8
Q

mass spectrometry

A

Mass spectrometry is an analytical tool useful for measuring the mass-to-charge ratio (m/z) of one or more molecules present in a sample.

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9
Q

what are the isotopes of Br

A

2; 79 and 81, both 50%

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10
Q

what are the isotopes of Cl

A

2

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11
Q

carbonyl functional group is?

A

C=O

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