Podcast Beta
Questions and Answers
What does one absorbance unit correspond to in terms of transmittance?
According to Bouguer-Lambert's law, how does the intensity of light decrease in an absorbing medium?
What is the proportionality constant in the expression log Io / It = Kb?
What does the term 'A' represent in Beer-Lambert's law A = abc?
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If the unit of concentration is 1M, what is the absorptivity known as?
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How can absorptivity be calculated from a plotted curve of A against C at fixed b?
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What is the unit of molar absorptivity (É›) in Beer-Lambert's law?
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'A(1%, 1cm)' is a term related to what characteristic of a substance?
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'log Io/It α C' is associated with which law?
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The spectrum of a substance in alkaline medium exhibits a hypsochromic shift and hyperchromic effect.
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At the isosbestic point, the absorbance of a substance is pH dependent.
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The oxidation of diphenylamine converts its quinonoid spectrum to the benzenoid spectrum.
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The change in spectrum of a substance upon dilution is an example of the effect of temperature.
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The same substance will have different spectra in polar and non-polar solvents.
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The isosbestic point represents the intersection of spectra at different pH values.
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Absorbance is not affected by changes in concentration at the isosbestic point.
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Effect of redox reaction can convert a quinonoid spectrum to a benzenoid spectrum.
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Dilution of a substance with water changes its benzenoid spectrum to a quinonoid spectrum.
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The effect of solvent on a substance's spectrum can be observed by comparing spectra in different solvent types.
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