Five standards of CuSO₄ at 600 nm give absorbance values.
What is the molar absorptivity ε (1.00 cm path)?
- A
2.0 M⁻¹cm⁻¹
- B
0.25 M⁻¹cm⁻¹
- Ccheck_circle
4.0 M⁻¹cm⁻¹
- D
8.0 M⁻¹cm⁻¹
Explanation
Slope (A/c) = 0.080/0.020 = 4.0 M⁻¹cm⁻¹ (constant), so ε = 4.0 M⁻¹cm⁻¹.