Select the compound that was used to generate the mass spectrum. Select the compound that was…
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Question “Select the compound that was used to generate the mass spectrum. Select the compound that was…”
Select the compound that was used to generate the mass
spectrum.
Answer
Mass spectroscopy is the solution to this problem. Mass spectrometry can be used to determine the chemical composition of unknown substances.
The mass spectrum is usually presented as a vertical bargraph. Each bar represents an ion with a particular mass-to-charge rate
, and the relative abundance is indicated by its length. The mass spectrum tracks the mass-to charge ratios HTML1$ as well as the intensities and molecular ions.
It is evident that the spectrum above shows the following:
1. The Molecular Ion Peak is 100, which indicates that the substance under investigation has a mass of 100.
2. 43 is the base peak.
The 13-rule is used to determine the formula.
m is the mass of the compound. Substitute mas 100g.
The formula therefore has 7 carbon atoms. For the remaining formula, multiply the r by 13:
In the following expression, substitute ras 1.69:
A molecule will therefore have the following number Hydrogen (H), atoms
It is C7H16. This is the formula to make alkanes.
The peaks are divided into different groups based on the spectra.
It starts at 15 and goes up to the first peak, which indicates that there has been a loss of a CH 3group.
1. 29-15=14 indicates fragmentation of a CH 2group.
2. 43-29=14 indicates fragmentation of a CH 2group.
3. 57-43=14 indicates fragmentation of a CH 2group.
4. 71-57=14 indicates fragmentation of a CH 2group.
5. 100-57=29 indicates the remaining C H 5 group.
We can identify several groups based on the fragmentation pattern. This is the possible structure of the compound:
Ans:
Heptane is the substance.
Conclusion
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