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kandikisses5594
11.11.2020 •
Chemistry
A Beer's Law Plot of sample A gives a slope equal to 1.2 M-1cm-1. Calculate molar concentration of this sample at a wavelength of 420 nm and an absorbance reading of 0.23 in a 1 cm cuvette.
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Ответ:
Explanation:
A = Absorbance of solution
E = Molar absorptivity
l = Length of cuvette = 1 cm
c = Concentration of solution
Beer's law is given by
The equation of a straight line is given by
Comparing the above equations we get
Value on
axis = A = Absorbance of solution = 0.23
So we get
The molar concentration of the sample is![0.192\ \text{M}](/tpl/images/0887/9462/54302.png)
Ответ: