What is the concentration of compound Y in an unknown solution if the solution has an...
What is the concentration of compound Y in an unknown solution if the solution has an absorbance of 0.846 in a glass cuvette with a path length of 0.2 cm? The molar absorptivity of compound Y is 54.2 cm-1(mg/ml)-1 under the conditions used for the absorption measurement.
Homework Answers
A = e*l*c
Where
A is absorbance
l is path length
c is concentration
e is molar absorptivity
Given:
A = 0.846
l = 0.2 cm
e = 54.2 cm-1.(mg/mL)-1
Use:
A = e*l*c
0.846= 54.2*0.2*c
c = 7.804*10^-2 mg/mL
Answer: 7.80*10^-2 mg/mL
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