Q5. Figure 2 shows the mass spectrum of the same compound from an El source and a Cl source. (a) Which mass spectrum would be best for determining the molecular mass of the compound? Why? (b) Which mass spectrum would be best for determining the chemical structure? Why? (c) The El source was a pulsed source used with a TOF mass analyzer. If the flight tube were 1.0 m long and the accelerating volt age were 3000 V, what would the flight time be for the ion at m/z = 58? Relative abundance 100 80 60 40 20 0 0 50 58 69 79 100 150 200
Q5. Figure 2 shows the mass spectrum of the same compound from an El source and a Cl source. (a) Which mass spectrum would be best for determining the molecular mass of the compound? Why? (b) Which mass spectrum would be best for determining the chemical structure? Why? (c) The El source was a pulsed source used with a TOF mass analyzer. If the flight tube were 1.0 m long and the accelerating volt age were 3000 V, what would the flight time be for the ion at m/z = 58? Relative abundance 100 80 60 40 20 0 0 50 58 69 79 100 150 200
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Transcribed Image Text:Q5. Figure 2 shows the mass spectrum of the same compound from an El source and a Cl
source.
(a) Which mass spectrum would be best for determining the molecular mass of the compound?
Why? (b) Which mass spectrum would be best for determining the chemical structure? Why?
(c) The El source was a pulsed source used with a TOF mass analyzer. If the flight tube were 1.0
m long and the accelerating volt age were 3000 V, what would the flight time be for the ion at
m/z = 58?
Relative abundance
100
80
60
40
20
0
T
50
58
69
ul
100
m/z
150
200
Transcribed Image Text:Relative abundance
100
80
60
40
20
0
T
0
50
58
61
(a)
88 107117 135
100
m/z
(b)
148
150
166
200
FIGURE 2: El spectrum (a) and Cl spectrum (b) of the same compound
Expert Solution
Step 1
a)The best way to figure out the molecular mass of a molecule is to look at its CI spectra.
b. The best way to figure out the chemical structure is to use EI.
c. The flight time for the ion is 2.8×108 sec
Detail explanation is given in step second
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