(12pts) Purity of Synthesized Aspirin Calculations
Measured mass of aspirin sample (g):
0.390
Total volume of aspirin stock solution \( (\mathrm{mL}) \) :
250.0
Volume of aspirin stock solution in sample solution \( (\mathrm{mL}): 10.00 \)
Total volume of aspirin sample solution \( (\mathrm{mL}) \) :
25.00
Use the slope and intercept information and the equation for a line \( (y=m x+b) \), where \( y \) is the absorbance and \( x \) is the concentration, to calculate the concentration of the unknown solution. (Hint: you may want to rearrange the equation to solve for \( x \) first.) Record this value as the concentration of salicylic acid in the aspirin sample solution.
Absorbance of aspirin sample:
0.72
\( (0 / 2 \mathrm{pts}) \)
Concentration of salicylic acid in aspirin sample solution (M)
(-2 pts) Incorrect. Use the equation for the best fit line to calculate the concentration of the aspirin solution.
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(0/2pts)
Concentration of salicylic acid in aspirin stock solution (M)
