MS, IR and NMR - Grade Gorilla IB Chemistry

Target: 10 Questions in 10 minutes An IB Chemistry data booklet is helpful
1. Which structural information can be obtained from an infrared spectrum? A. Bond type B. Bond length C. Bond angle D. Molecular mass		ABCD
2. The infrared spectrum of a compound shows major absorbances at 3350 cm^-1 and 2900 cm^-1 only above 1500 cm^-1. Which one of the following compounds is the most likely to produce such a spectrum? A. Propan-1-ol B. Propanoic acid C. Methyl ethanoate D. Propene		ABCD
3. The infrared spectrum of a compound is shown below. Which structure is unlikely to be the compound?
A. CH₃COCH₂CH₃ B. CH₃CH₂CH₂CHO C. CH₃CH₂CH₂COOH D. CH₃COCH₂CH₃		ABCD
4. How many different hydrogen environments are there in this molecule?
A. 3 B. 4 C. 5 D. 6		ABCD
5. What is the relative number of hydrogen atoms in each environment in the molecule 1-methoxypropane CH₃O(CH₂)₂CH₃? A. 6:2:2 B. 3:4:3 C. 3:2 D. 3:2:2:3		ABCD
6. The following four molecules all share the same molecular formula C₄H₈O₂. How many of them will show three major peaks in their ¹H NMR spectrum?
A. 1 B. 2 C. 3 D. 4		ABCD
7. The ¹H NMR spectrum of a compound contains 3 peaks with the relative area of 2:1:6, as shown below.
Which of the following is the most likely compound? A. 1-methylethyl methanoate B. propylamine C. 2-chlorobutane D. 1-bromo-2-methylpropane		ABCD
8.In the high-resolution ¹H NMR spectrum, which of the following bolded hydrogen atoms (H) would be shown as a triplet? A. B. C. D.		ABCD
9.Which of the following peaks is not likely to be present in the mass spectrum of this molecule?
A. 43 B. 45 C. 77 D. 122		ABCD
10. The mass spectrum of compound P shows a peak at m/z = 71 with the highest intensity. The ¹H NMR of this compound shows three peaks at 1.04ppm, 1.84ppm and 3.94ppm. Which of the following molecules could be a structure of P? A. B. pentan-3-ol C. 3-bromopentane D. Butylamine		ABCD