Find Epsilon in Beer's Law Equation for Absorbance vs. Concentration Graph

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To find epsilon (ε) in Beer's Law (A = εLc), one must analyze the linear graph of absorbance versus concentration. The slope of the line represents εL, where L is the path length of the light through the sample. To isolate ε, divide the slope by the path length (L). Additionally, understanding that the y-intercept (b) indicates the absorbance when concentration (C) is zero can clarify the relationship. This approach allows for the determination of epsilon from the graph's slope.
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Homework Statement


I am given a linear graph that is Absorbance vs. Concentration. How do I find epsilon in the beer's law equation?

Homework Equations


Beer's law: A = Epsilon x L x c

The Attempt at a Solution


I just need a general explanation. Thanks.
 
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Hikari said:
Absorbance vs. Concentration
Hikari said:
A = Epsilon x L x c
Gee. Let me think. What do those symbols and letters mean/stand for?
 
Hint:
A = εbc ⇔ y = mx + b

Hint 2: Because the b term (y-intercept) throws many off. What would the absorbance be if C = 0?
 

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