1a. In mass spectrometry, the molecular ion peak is the ___ and tells you the __
ID: 938093 • Letter: 1
Question
1a. In mass spectrometry, the molecular ion peak is the ___ and tells you the ____.
tallest peak/bond types
(M)+• peak/molecular weight
(M+1)+• peak/base peak
1b. The HDI of C3H5ClO is:
0
1
2
3
1c. In H NMR, propane has ____ kind(s) of chemically equivalent proton(s) in a ratio of ____ to ___.
1/8/0
2/6/2
3/3/5
1d. In H NMR, which proton is the most deshielded?
C-H
H-C-Cl
O-H
1e. A two step synthesis of Naproxen is shown below. In the second step, a Grignard reagent reacts at
C-1 (carbonyl carbon)
C-2 (carbon bonded to Br)
C-3
1f. Note Reagent 2 has a –COOMgCl group instead of –COOH. The –COOMgCl is used because this reagent will not react with ___ whereas –COOH will.
Explanation / Answer
1a. In mass spectrometry, the molecular ion peak is the _(M)+• peak __ and tells you the molecular weight ____.
tallest peak/bond types
1b. The HDI of C3H5ClO is: what is HDI ? Is it IHD, ok I assume it as IHD-
IHD is 1
1c. In H NMR, propane has _2___ kind(s) of chemically equivalent proton(s) in a ratio of _6___ to 2___.
1d. In H NMR, which proton is the most deshielded?
O-H
1e. A two step synthesis of Naproxen is shown below. In the second step, a Grignard reagent reacts at
C-2 (carbon bonded to Br)
1f. Note Reagent 2 has a –COOMgCl group instead of –COOH. The –COOMgCl is used because this reagent will not react with Grignard reagent ___ whereas –COOH will.
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