Lesson Worksheet: The Beer–Lambert Law Chemistry

In this worksheet, we will practice using the Beer–Lambert Law to calculate absorption from the molar extinction coefficient, path length, and concentration.


According to the Beer–Lambert law, which two variables are linearly correlated if the path length of the cell is held constant?

  • AConcentration and wavelength
  • BTransmission intensity and concentration
  • CTransmission intensity and wavelength
  • DAbsorbance and concentration


Which of the following describes the correct relationship between absorbance and transmission?

  • A𝑇=ο€Ό1𝐴log
  • B𝐴=ο€Ό1π‘‡οˆlog
  • C𝑇=(𝐴)log
  • D𝐴=(𝑇)log


An absorbance value of zero corresponds to 100%β€Ž transmittance. What transmittance value corresponds to an absorbance value of 2?

  • A0%β€Ž
  • B98%β€Ž
  • C1%β€Ž
  • D80%β€Ž

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