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# Numerical Problem on Photochemistry

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The % transmittance of an aqueous solution of a dye at 450 μm and 25oC is 30% for a 2 x 10-3 M solution in a 2 cm cell. Calculate optical density (OD) and molar extinction co-efficient. Find the concentration of the same dye in another solution in which % transmittance is 20% in a 1 cm cell, at same temperature and same wavelength of light.

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The solution comes in the form of a .doc file and it provides answers to a numerical problem using the basic concepts of photochemistry.

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Q. The % transmittance of an aqueous solution of a dye at 450 μm and 25oC is 30% for a 2 x 10-3 M solution in a 2 cm cell. Calculate optical density (OD) and molar extinction co-efficient. ...

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