Final answer:
The equation that relates the length of the light path for identical transparency to the concentration of the solution is A = εlc.
Step-by-step explanation:
The equation that relates the length of the light path for identical transparency to the concentration of the solution can be derived from Beer-Lambert Law.
Beer-Lambert Law states that the absorbance of a sample is directly proportional to the concentration of the solution and the length of the light path through the solution.
The equation is:
A = εlc
Where:
- A is the absorbance
- ε is the molar absorptivity
- l is the length of the light path
- c is the concentration of the solution