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Which of these two isomers, cyclopentane or 1-pentene, is this the IR spectra of?

Which of these two isomers, cyclopentane or 1-pentene, is this the IR spectra of?. 1650 cm -1. 3000 cm -1. What IR peaks would you expect for the two molecules with the formula C 2 H 6 O?. Ethanol. Dimethyl ether. -OH 3200 - 3600 cm -1 -CH 3000 cm -1. -CH 3000 cm -1.

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Which of these two isomers, cyclopentane or 1-pentene, is this the IR spectra of?

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  1. Which of these two isomers, cyclopentane or 1-pentene, is this the IR spectra of? 1650 cm-1 3000 cm-1

  2. What IR peaks would you expect for the two molecules with the formula C2H6O? Ethanol Dimethyl ether -OH 3200 - 3600 cm-1 -CH 3000 cm-1 -CH 3000 cm-1

  3. IR spectra of ethanol. The spectra of dimethyl ether would look similar minus the large –OH stretch. 3000 cm-1 3200 - 3600 cm-1

  4. Which of the three compounds below matches the IR spectra? 3000 cm-1 1650 - 1800 cm-1

  5. Using the mass and IR spectra, determine the identity of the compound containing only C, H and O? 58 100

  6. Determine the # of C’s. 100/12 = 8 C’s 8 x 12 = 96 100 – 96 = 4 So C8H4 DOUS=7 We know there is at least one oxygen so subtract a –CH4 group. C7O DOUS=8 also not a likely formula So get rid of 1 C and add 12 H’s C6H12O DOUS=1 looks much better Now add one more O for more possibilities. C5H8O2 DOUS=2

  7. C6H12O C5H8O2

  8. 1650-1800 cm-1 1650 cm-1

  9. CNH2N+2

  10. CNH2N+2 CNH2N CNH2N-2 C3H4

  11. (2(3)+2-5-1)/2=1 (2(4)+2-7+1)/2=2

  12. 4 7 7 4 7 2 3

  13. 3 2 4 4 3 10 5

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