Beer Lambert Law Extinction Coefficient
Beer Lambert Law, help?
A= Ecl
I have to solve E.
I have a line graph with the concentration of salicylate against absorbance,,,and i have the gradient of this line to be 1445.51.. how do i calculate the extinction coefficient?
Assuming the path length is 1cm and the concentration is in mol dm-3 then remember y = mx + c in a straight line graph? m is the gradient and c is the y intercept. So in your graph A = y and c (concentration) = x? Then E x l would be the gradient. As l is usually 1 cm E would be 1445.51 dm3 mol -1 cm-1
Those units mean that all the units on the right cancel out as absorbance is dimensionless.
EDIT: The guy above me has messed up units and humour.