Quantitative Chemical Analysis 7e

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• Light has
• Intensity
• Color (wavelength)
• Polarization

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E h ?
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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
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Linewidth
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ATR
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ATR
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ATR
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ATR
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Fourier transform IR
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Fourier transform IR
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Electromagnetic Radiation
Polarization
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Unpolarized light
Polarization
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Polarized light
Polarization
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Polarizing sun glasses reduce glare of polarized
reflections from surfaces
Polarization
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Polarization
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Polarization

(b)
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Mirror image of hand
Polarization
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Optical Isomer and Interaction with Light
Polarization

• 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
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Polarization