Please answer this question and explain how I would be able to tell if an alcoho
ID: 495928 • Letter: P
Question
Please answer this question and explain how I would be able to tell if an alcohol or benzene ring were present. Thank you
9) Which choice(s) (a-f) give(s) information about the compound responsible for the following mass spectrum? Answer(s): Natural 100 91 Atom Isotope Abundance 100 Fluorine Chlorine CI, scl 81 24.2, 75.8 80 Bromine Br, 79 Br 49.3, 50.7 Iodine 100 D 60 40 126 20 128 TtTTTTTTTTTTTTTTTTFITTTTTT 25 50 100 125 75 a. contains an alcohol b. contains chlorine c. contains bromine d. is not aromatic no benzene ring) e. contains iodine f. does not contain fluorineExplanation / Answer
answer B
It contains chlorine
If the ratio of M+ and [M+2]+ is 3: 1 in the mass spectrum it represents presence of chlorine atom. in the above mass spectrum the ratio of peak at 126 and 128 is 3: 1 . so it contains chlorine. (isotopic abundance of Cl35 and Cl37 ratio is 3: 1).
If the ratio of M+ and [M+2]+ is 1: 1 it shows the presence of Br