Assume the concentration of food coloring is doubled in a solution, explain how each of the following would change.a. Absorbance of solution.
Question
Assume the concentration of food coloring is doubled in a solution, explain how each of the following would change.
a. Absorbance of solution.
Solution
a. Absorbance of solution:
The absorbance of a solution is directly proportional to the concentration of the solute according to the Beer-Lambert law. This law states that the absorbance (A) is equal to the molar absorptivity (ε) times the path length (l) times the concentration (c). Mathematically, this is expressed as A = εlc.
If the concentration of the food coloring in the solution is doubled, the absorbance would also double. This is because the molar absorptivity and the path length remain constant, so any change in the concentration will result in a proportional change in the absorbance. Therefore, if the concentration is doubled, the absorbance will also double.
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