Beer’s Law

Absorbance and Transmittance

• Absorbance: Refers to the amount of light absorbed by a solution.

  • Inverse relationship with transmittance (less absorption = higher transmittance).

  • Solutions give color based on the wavelengths of light they absorb.

• Transmittance: Is the amount of light that passes through a solution.

  • High transmittance indicates low absorbance.

  • desired data was not collected intentionally.

Color of Solutions

• All solutions observed appeared green.

• This indicates they likely absorb red and blue light wavelengths.

• Understanding the specific color and absorbance properties aids in interpreting lab data.

Graphing Data

• Ensure graphs include suitable titles and properly labeled axes.

• Different lines represent absorbance (linear) and transmittance (exponential).

• The two data sets give insight into the relationship between absorb