Question

Mass Spectroscopy Question

Answer 1

@Photon336

Answer 2

hm Let me see

Answer 3

"Finding the relative formula mass (relative molecular mass) from a mass spectrum is therefore trivial. Look for the peak with the highest value for m/z, and that value is the relative formula mass of the compound."

Answer 4

There has to be an m/z-43 in order for the acetyline ion be present

Answer 5

Actually, i have a chart for the m/z of some known structures.

Answer 6

I will attach it below.

Answer 7

@Zale101 I'm wondering if you can use the m/Z values to identify the fragments on the graph, for each compound.

Answer 8

Ahhh, i see now. Thanks!

Answer 9

What I did was I figured out the molar mass of one of the compounds and matched it with the corresponding m/Z value

Answer 10

I'm pretty sure you can do that for the other compounds. a,b,c

Answer 11

What's getting me confused is having M+1, M+2...

Answer 12

Sorry, i was lagging.

Answer 13

Anyways, the mass of the radical positive ion is the m/z. M-29 or some other number is the mass of the fragment.

Answer 14

no problem

Answer 15

take a look at this

http://www.chemguide.co.uk/analysis/masspec/mplus2.html

Answer 16

could probably get a discussion going on this, and we can work together and figure it out. I never used mass spec though. I did HPLC, H-NMR, IR,

Answer 17

I did NMR and IR last semester, but Mass spec is really new to me.