Organic II - Spectroscopy Flashcards

1
Q

How does the electron beam ionizes the molecule?

A

By ejecting the electron.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Is mass spectrometry a non-destructive technique?

A

No, it is destructive and cannot be recovered.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How is a radical cation represented?

A

M^+.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does M represent in the radical cation?

A

mass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Are radical cations stable?

A

No

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What does m/z represent?

A

mass-to-charge ratio

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What does m and z represent in m/z?

A

Mass and charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the number value for z in m/z most of the time?

A

+1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Do low resolution mass spectrometers report m/z values to the nearest whole number?

A

Yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Do high resolution mass spectrometers measure m/z ratios to four (or more) whole numbers?

A

No, to decimal places.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What ratio do chlorine isotopes natural occur?

A

3:1 ratio

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

In a mass spectrum, the peak with the greatest abundance is referred to as the…

A

base peak.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly