Chemistry Spectroscopic analysis of Aspirin: not sure if im doing the calculatio

ID: 514467 • Letter: C

Question

Chemistry Spectroscopic analysis of Aspirin:

not sure if im doing the calculations correct.

i graphed it on excel and got the slope to be 781x+0.024

3. Assuming that B is 1.0 Cm and the literature value for E is 1.8 x 103, what is the percent difference between your value and the literature value?

100 x (781 / 1.8 x 103) = 0.43%

4. Concentration of complex in diluted aspirin solution.

0.426 = 781 ( 1) c

5.45 x 10-4 = c

5. Concentration of Acetylsalicylic Acid in original aspirin solution

((5.45 x 10-4 ) (100 mL) / 250 mL) = 2.18 x 10-4

6. Moles of Acetylsalicylic Acid in original aspirin solution and in aspirin tablet

2.18 x 10-4 mol/ L x 1 L = 2.18 x 10-4

7. Molecular mass of Acetylsalicylic Acid

180.151 g/ Mol

Concentration of Acetylsalicylic Acid prepared by dilution 100 mL to 250 mL.

Concentration of Asperine=5.45*10-4*(250/100)=1.3625*10-3 M

moles in 1 lit solution=1.3625*10-3mole/lit*1lit=1.3625*10-3 moles

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