Show IntroInstructions Beers Law Plot 140 120 100 080 060 04

Show Intro/Instructions Beer\'s Law Plot 1.40 1.20 1.00 0.80 0.60 0.40 0.20 0.00 10 20 30 40 50 Concentration (M 10 ) The slope for the line is 87.51. Use the Beer\'s Law plot provided to determine the concentration for a solution with absorbance = 0.3737. -5 x 10 M Points possible: 3 This is attempt 1 of 3

Solution

The equation for Beer-Lambert’s law is given by

A = cl

Where A= absorbance

c= concentration of sample

l= path length of sample

A plot of absorbance against concentration gives extinction coefficient as the slope.

Here,

l=1, A = 0.3737, = 87.51

c= A/ l = 4.27 x 10^-3 = 427 x 10^-5 M