1. Quantitative Chemical Analysis Seventh Edition Quantitative Chemical Analysis Seventh Edition Chapter 19-21 Atomic spectroscopy Applications Copyright © 2007 by W. H. Freeman and Company Daniel C. Harris

2. Light has: Intensity Color (wavelength) Polarization

3. E = h ν

13. o

16. The fraction of atoms in the excited state is still less than 0.02%, but that fraction has increased by 100(1.74 – 1.67)/1.67 = 4% The fraction of atoms in the ground state is still more than 99.98%, and that fraction has increased by 100x7x10 -6 /.9998 = 7x10 -4 %

17. Linewidth

20. ATR

24. Fourier transform IR

26. Electromagnetic Radiation Polarization

27. Unpolarized light Polarization

28. Polarized light Polarization

29. Polarizing sun glasses reduce glare of polarized reflections from surfaces Polarization

31. (b) Polarization

32. Mirror image of hand Polarization

33. Optical Isomer and Interaction with Light Enatiomers rotate the plane of polarized light. Dextrorotatory- “d” isomer Complex which rotates plane of polarized light to the right. Levorotatory- “l” isomer Complex which rotates plane of polarized light to the left. Chiral molecules are optically active because effect on light Polarization