Question

From an experiment the absorbance of a 0.30 M Ni' solution was measured to be 0.25 with a 1.00 cm path length cuvette. Calculate the molar absorptivity of this solution using Beer's Law.

A) ε = 0.083 L⋅mol^−1⋅ cm^−1
B) ε = 0.0833 L⋅mol^−1⋅ cm^−1
C) ε = 2.50 L⋅mol^−1⋅ cm^−1
D)ε = 8.33 L⋅mol^−1⋅ cm^−1
E) ε = 25.0 L⋅mol^−1⋅ cm^−1

Answer 1

To calculate the molar absorptivity (ε) of the Ni' solution using Beer's Law, we can use the equation A = εcl, where A is the absorbance, ε is the molar absorptivity, c is the concentration, and l is the path length.

Step-by-step explanation:

To calculate the molar absorptivity (ε) of the Ni' solution using Beer's Law, we can use the equation A = εcl, where A is the absorbance, ε is the molar absorptivity, c is the concentration, and l is the path length. In this case, the absorbance is 0.25, the path length is 1.00 cm, and the concentration is 0.30 M. Plugging these values into the equation, we get 0.25 = ε x 0.30 x 1.00. Solving for ε, we find that ε = 0.0833 L⋅mol⁻¹⋅cm⁻¹.