Name ________________________
 
 
 
 
 
 

Match the above peaks in the IR spectra of air (absorbance vs wavenumber where wavenumbers are from 4000 cm-1 on the left to 600 cm-1 on the right) to the following:

1. CO stretch in CO2.

2. OCO bend in CO2.

3. The OH bend of H2O.

4. The OH stretch of H2O.

5. What wavelength in mm (10-6 m) corresponds to a wave number of 2000 cm-1?

6. Which of these would absorb in the IR region?

a) CO2 b) N2 c) H2O d) a and c e) a, b, and c

7. Which of the following has the highest energy photon?

a)IR b) UV c) vis d) X-ray e) microwave

8. 465 nm = ______________ m

9. 10 ppm Fe = _______________ M Fe

10. As the frequency of a photon increases the energy __________ and the wavelength ____________.

a) increases, increases b) increases, decreases c) decreases, decreases d) decreases, increases