Week 3 Flashcards
mass spectra
1
Q
Notation hard ionization
A
M+1+
1
Q
M+1 peak corresponds to
A
the molecule with 13C atom
2
Q
Notation soft ionization
A
M+H+1+
3
Q
Calculation of ratio between M+ AND M+1+
A
M+:(M+1)+=100:n*1.1
4
Q
Chlorine isotopes
A
35Cl and 37Cl ;ratio 3:1
5
Q
Bromine isotopes
A
79Br and 81Br : ratio 1:1
6
Q
Sulfur
A
32S,33S,34S,36S ;
Ratio M:(M+2)=100:4
7
Q
Binomial formula of Newton
A
(a+b)^2=a^2+ab+b^2
8
Q
Nitrogen rule
A
1N=ODD
2N=EVEN
3N=ODD
4N=EVEN
ETC
9
Q
Nitrogen rule in case of soft ionization
A
No N present:Mw=even;[M+H]+ ODD
1N;Mw=ODD;[M+H]+ EVEN
ETCCC
