two tables containing electron impact mass spectra data are shown. select the molecule that corresponds to the appropriate spectrum
A) m/z: 29 57 86
B) m/z: 43 71 86
options for both 3-methyl-2-butanone, 3-pentanone, acetone, benzene
To determine which molecule corresponds to the given mass spectrum, we need to compare the m/z (mass-to-charge ratio) values of the spectrum with the m/z values for the molecules listed as options.
For Table A, the m/z values are 29, 57, and 86. We can compare these values with the options provided:
- 3-methyl-2-butanone: None of the m/z values (29, 57, 86) match.
- 3-pentanone: None of the m/z values (29, 57, 86) match.
- Acetone: One of the m/z values (29) matches.
- Benzene: None of the m/z values (29, 57, 86) match.
Therefore, the molecule corresponding to Table A's spectrum is likely acetone.
For Table B, the m/z values are 43, 71, and 86. We can compare these values with the options provided:
- 3-methyl-2-butanone: None of the m/z values (43, 71, 86) match.
- 3-pentanone: One of the m/z values (43) matches.
- Acetone: None of the m/z values (43, 71, 86) match.
- Benzene: One of the m/z values (86) matches.
Therefore, the molecule corresponding to Table B's spectrum is likely a mixture of 3-pentanone and benzene.
In conclusion:
- Table A corresponds to acetone.
- Table B corresponds to a mixture of 3-pentanone and benzene.