Interpretation of Mass Spectrometry

Peak 1 is primarily due to
1. [¹²C³²S₂]⁺
2. [¹⁴C³⁰S³²S]⁺
3. [¹²C³⁰S³⁴S]⁺
4. [¹²C³⁴S₂]⁺
Peak 2 corresponds to
1. [¹⁴C³²S₂]⁺
2. [¹⁴C³⁰S³²S]⁺
3. [¹²C³⁰S³⁴S]⁺
4. [¹²C³⁴S₂]⁺
Peak 3 corresponds to
1. [¹⁴C³²S₂]⁺
2. [¹²C³⁴S]⁺
3. [¹²C³²S]⁺
4. [¹⁴C³⁰S]⁺
Peak 4 provides evidence of
1. carbon-12
2. [³⁴S]⁺
3. [³²S]⁺
4. [³⁰S]⁺
The diagram shown here provides evidence for the existence of the TWO isotopes
1. boron-10 and boron-11
2. fluorine-19 and fluorine-20
3. boron-11 and fluorine-20
4. boron-9 and boron-12
Peak 1 identifies
1. [¹¹B¹⁹F₃]⁺
2. fluorine-19 and fluorine-20
3. boron-11 and fluorine-20
4. boron-9 and boron-12
The difference between peaks 2 and 3 is
1. The fragment at peak 2 contains boron-11 and the fragment at peak 3 contains boron-10
2. The fragment at peak 3 contains three atoms of fluorine and the fragment at peak 2 contains only two atoms of fluorine
3. The fragment at peak 3 contains boron-11 and the fragment at peak 2 contains fluorine-18
4. The fragment at peak 3 contains an atom of hydrogen not contained in the fragment at peak 2
The peak labeled "1" corresponds to
1. [¹H₃¹²C¹⁹F]⁺
2. The fragment at peak 3 contains three atoms of fluorine and the fragment at peak 2 contains only two atoms of fluorine
3. The fragment at peak 3 contains boron-11 and the fragment at peak 2 contains fluorine-18
4. The fragment at peak 3 contains an atom of hydrogen not contained in the fragment at peak 2
The masses of peaks 1, 2, 3, and 4 are successively smaller in mass by one. This can be explained by
1. Successively fewer atoms of hydrogen-1
2. different isotopes of carbon
3. different isotopes of carbon and hydrogen
4. different isotopes of fluorine
The peak labeled "5" corresponds primarily to
1. [¹H₃¹²C]⁺
2. [³H¹²C]⁺
3. [²H₂¹¹C]⁺
4. [¹²C¹⁹F]⁺
There is a barely noticeable peak at a mass = 35. The best explanation for this is
1. [¹H₃¹³C¹⁹F]⁺
2. [¹H₃¹²C²⁰F]⁺
3. [²H¹H₂¹²C¹⁹F]⁺
4. [²H¹⁴C¹⁹F]⁺
The peak labeled "2" identifies primarily
1. [¹H₂¹²C₂]⁺
2. [¹H₃¹²C²⁰F]⁺
3. [²H¹H₂¹²C¹⁹F]⁺
4. [²H¹⁴C¹⁹F]⁺
The masses of peaks 2, 3, and 4 are successively smaller in mass by one. This can be explained by
1. successively fewer atoms of hydrogen-1
2. the isotopes of carbon (carbon-12, carbon-13 and carbon-14)
3. the largest peak containing hydrogen-3, the next largest containing hydrogen-2, and the smallest containing hydrogen-1
4. contamination of the sample tested
Which of the following is NOT represented on this diagram?
1. [¹²C³⁵Cl₄]⁺
2. the isotopes of carbon (carbon-12, carbon-13 and carbon-14)
3. the largest peak containing hydrogen-3, the next largest containing hydrogen-2, and the smallest containing hydrogen-1
4. contamination of the sample tested
Peak #3 represents
1. [¹²C³⁵Cl₄]⁺
2. [¹²C³⁵Cl₃]⁺
3. [¹²C³⁵Cl₂³⁷Cl]⁺
4. [¹²C³⁵Cl³⁷Cl₂]⁺
Peaks 8 and 9 are evidence of
1. two isotopes of carbon
2. chlorine's existence as a diatomic molecule
3. two isotopes of chlorine
4. chlorine's electron configuration
Peak 1 represents primarily
1. [¹H₃¹²C₂⁸¹Br]⁺
2. chlorine's existence as a diatomic molecule
3. two isotopes of chlorine
4. chlorine's electron configuration
Peaks 3 and 4 are evidence for
1. two isotopes of bromine, of nearly equal abundance
2. carbon's ability to form four bonds
3. the existence of only one isotope of bromine, having a mass of nearly 80
4. the diatomic nature of halogen molecules
The peak labeled "5" represents primarily which fragment?
1. [¹H₃¹²C₂]⁺
2. [¹³C¹²C]⁺
3. [³H¹¹C₂]⁺
4. [²H¹²C₂]⁺
The un-numbered peak with a mass of 25 would be predominantly due to which fragment?
1. [¹H¹²C₂]⁺
2. [¹³C¹²C]⁺
3. [³H¹¹C₂]⁺
4. [²H¹²C₂]⁺