Final answer:
The correct expression for the Beer-Lambert law in slope-intercept form is Absorbance = Slope (Concentration) + y-intercept, where the units for the slope are (Absorbance)/(Concentration).
Step-by-step explanation:
The question is asking to express the Beer-Lambert law in the slope-intercept form with absorbance as the dependent variable (y) and concentration as the independent variable (x). In slope-intercept form, the equation is Absorbance = Slope (Concentration) + y-intercept, where the slope corresponds to the molar absorptivity (often denoted by the Greek letter epsilon ε) multiplied by the path length (l), and the y-intercept represents any absorbance that occurs when the concentration is zero. The correct units for the slope, given that absorbance has no units and concentration is typically in moles per liter (M), would be Absorbance/Concentration, which simplifies to L/mol·cm.
The correct expression, including proper units for the slope in this case, would be option B: Absorbance = Slope (Concentration) + y-intercept, units: (Absorbance)/(Concentration).