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Kinetics and Integrated Rate Law 1)If the rate constant is independent of analytical wavelength, why is...

Kinetics and Integrated Rate Law

1)If the rate constant is independent of analytical wavelength, why is it still beneficial to use the maximum absorbance wavelength for data collection?

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Answer #1

Concentration of a compound is directly proportional it's absorbance intensity.

A   C, A= Maximum absorbance, C= concentration

More importantly, maximum absorbance wavelength is a characterstic of each compound. Maximum wavelength of absorption gives highest sensitivity and less deviation from beer's law.

Thus, it is always prefarable to use this for data collection. Especially incase of a mixture of compounds, maximum absorbance wavelegth is mandatory to identify or quantity the individual compound.

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