
3/26/2020 Name! 1. Which of the m/z values correspond to the molecular ion for the following...
79. Which of the m/z values correspond to the molecular ion for the following compound? OH A) 18 B) 82 100 0 102 E) 103
Assign a base peak, molecular ion peak (with m/z) and identify
the structure.
100- MS-N-0025 Relative Intensity 10 2030 70 80 90 m /z rse Cha O a OOTW
a) Describe the difference between the base peak and the parent
ion (or molecular ion) peak.
b) Identify the base peak and the parent ion (or molecular ion)
peak (if any) according to the mass spectrum.
c) Identify the mass fragments which correspond to m/z = 77,
105, 111, and 139.
d) Identify and give explanations for the magnitude (or
intensity) of the peaks at m/z = 113, 141, and 218.
Mass Spectrum ofp-C hlorobenzophenone 105 100 80 139 CI...
Question 5 (2 points) For which of the following compounds will the M+2 peak intensity be equal to the intensity of the molecular ion peak M? a) CH3CH2CH OH 0 b) CHỊCH CHANH, Oc) CH3CH2CH_Br d) CH,CH2CH2C1 Question 6 (2 points) What is the product of the reaction below? "OH PCC o OH O OH TV a) Obiy c)
1. An unknown hydrocarbon has a molecular ion peak at m/z 84 with a relative intensity of 31.3. The M+1 peak has a relative intensity of 2.06 and the M+2 peak has a relative intensity of 0.08. What is the possible molecular formula of the compound?
Which of the following compounds is consistent with an M** peak at 73 m/z ratio? a. CH3CH2CH(CH3)2 b. CH3CH(OH)CH2CH3 C. CH3CH2OCH2CH3 d. CH3(CH2)3NH2
Circle the molecular ion peak for the following MS spectrum and
the m/z value for the molecular ion is _____________
4. Circle the molecular ion peak for the following MS spectrum and the m/z value for the molecular ion is 42 pt) 100 80- 60- ? 40- 20- 10 20 30 40 50 m z
Which of the following m/z fragments will be the molecular ion peak of the analyte pictured below? 85 176 91 43
3. Do all parts and explain! a. What is the most likely molecular formula of a compound (that contains only C, H and O) which has a molecular ion in the EI mass spectrum with m/z of 104 and an M+1 peak that is 5.5% of the intensity of the molecular ion peak? b. What is the most likely molecular formula of a compound that has a molecular ion in the EI mass spectrum with m/z of 136, with a...
17) Which of the following ions gives a peak in the mass spectrum of 1-butanol? A) o CH3CH2CH=CHA B) CH3CH2CH=CH: C) CH, CH2CH=CHE D) CH3CH2CH=CHE E) none of the above