Question

pre - lab 7 question 4 4.75 points
which combination of path length and concentration would have the highest absorbance?
a large path length and large concentration
b large path length and small concentration
c small path length and large concentration
d small path length and small concentration

Explanation:

According to the Beer - Lambert Law \(A=\epsilon lc\) (where \(A\) is absorbance, \(\epsilon\) is the molar absorptivity constant, \(l\) is the path length, and \(c\) is the concentration). Absorbance \(A\) is directly proportional to both path length \(l\) and concentration \(c\). So, a large path length (\(l\)) and a large concentration (\(c\)) will result in the highest value of \(A\) as the product \(lc\) (when \(\epsilon\) is constant) will be the largest.

Answer:

A. large path length and large concentration