Introduction to mass spectrometry (2)

Organic chemistry: Mass spectrometry. Molecular/parent ion; base peak. Carbon-13; bromine and chlorine isotopes. Fragmentation and substitution

This is a recording of a tutoring session, posted with the students' permission.

These videos are offered on a "pay-what-you-like" basis. You can pay for the use of the videos at my website:
http://www.freelance-teacher.com/videos.htm

For a list of all the available video series, arranged in suggested viewing order, go to my website.

For a playlist containing all the videos in this series, click here:
http://www.youtube.com/watch?v=rBymrFzcaPM&feature=PlayList&p=4381440...

(1) Molecular/parent ion; base peak
(2) Continued. Carbon-13
(3) Continued. Bromine and chlorine isotopes
(4) Continued
(5) Continued. Fragmentation and substitution

Category:

Education

Tags:

• mass
• spectrometry
• molecular
• parent
• ion
• base
• peak
• carbon-13
• bromine
• chlorine
• isotopes
• fragmentation
• substitution

[InnaGee]

you explain this much better than my prof did.

[blackhappiness2]

YOU ROCK!!!!!!!! :D thnx fr posting these up :)

[pleikul]

elbow dancing! eg: 07:25

[BlueBerry349]

so so great. I have a question though..

for methane, if your mass spetrometre detects the mass of your molecule, how can there be two peaks for each isotope of c, if in methane there will only be either 12C or 13C???? I mean, in that case, the mass spectrometre isn't telling you what you have, but the probabilities of having one or another.. ???

[003harishcool]

excellent video with good explanation...............

thank you

[alan0jjang]

dunno if u guys noticed, but I found his left arm twitching disturbing...

Aside from that its a really great video to learn from

Better than my Lecturer :O

[crocosensor]

chemistry is so easy when a good teacher like you teaches us

[bt06137]

@LynxChan cheers mate

[LynxChan]

@bt06137 it's because the chance of having m+1 on any given carbon is 1.1%, so if you have 5.5% of all of the carbons in the m+1 state you can assume there are 5 carbons in the molecule (1.1 x 5)..

[bt06137]

i dont get the end, how can there be 5 carbons if m + 1 = 5.5% of parent height

[tragicRob]

Have you thought to create a video Podcast and post to iTunes U?