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Spectrophotometry
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Assignments:

 

  1. The molar extinction coefficient of a solution of concentration 0.04 M and thickness 10.5 cm is 80.08 L mol-1 m-1. Find the value of               optical density.
  2. Absorbance of a solution is found to be 0.83 .Calculate % Transmittance.
  3. When a wavelength of 250 nm is passed through a solution, the light intensity is reduced to 20% of its initial value. Then absorbance is     given by _____
  4. The absorbance of 1 mm of a sample solution whose concentration is 0.03 M is _____. (Given that the molar absorption coefficient is 10   L mol-1 m-1)
  5. An unknown solution showed absorbance 5.000 and molar absorption coefficient, ε= 160 L mol-1 m-1, (Thickness, l=2 cm). Calculate         the concentration of the solution.

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