Which of the following statements best explains the

Info icon This preview shows pages 6–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Which of the following statements best explains the information we can gain from infrared spectroscopy? a. It allows us to determine the number of protons in a compound. b. It allows us to determine the kinds of functional groups in a compound. c. It allows us to determine the molecular weight and the mass of some fragments of a compound. d. It allows us to determine the presence and nature of a carbocation in the compound. e. It allows us to determine the presence and nature of a free radical in the compound. 30. Which of the following molecules will have the highest energy C=O stretch? C 31. Which of the following molecules will have the lowest energy C=O stretch? A 32. You have two samples (shown below), one is known to be acetophenone, while the other one is 1- phenylethanol. Where would you look in the IR to know which sample is which? (either answer was correct) a. ~3300 cm -1 b. ~2200 cm -1 c. ~1700 cm -1 d. ~1450 cm -1 33. Which molecule below has a significant band in the IR at 2200 cm -1 ? a. CH 3 CH 2 CH 2 CH 2 b. CH 3 CCCH 2 CH 3 c. CH 3 CH 2 CH(NH 2 )CH 3 d. (CH 3 ) 3 N e. CH 3 CO 2 CH 2 CH 3
Image of page 6

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
34. At what wavenumber will the C-H stretch involving an sp carbon appear? a. 2700 cm -1 b. 2900 cm -1 c. 3100 cm -1 d. 3300 cm -1 e. 3500 cm -1 35. Which functional group is present in the following IR spectrum? a. Alkyne b. Nitrile (C≡N) c. Alkene d. Alcohol e. Carboxylic acid 36. Which one of the following compounds produced the IR spectrum below? C 37. Which one of the following compounds produced the IR spectrum below? B
Image of page 7
Scratch Paper
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern