could you please explain theses datas and graph for the synthesis and spectrophotemetric analysis of aspirin and also I got 84.3% for my percent aspirin and 8.43% for my percent yield could you include that in the expiation too
could you please explain theses datas and graph for the synthesis and spectrophotemetric analysis of aspirin and also I got 84.3% for my percent aspirin and 8.43% for my percent yield could you include that in the expiation too
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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could you please explain theses datas and graph for the synthesis and spectrophotemetric analysis of aspirin and also I got 84.3% for my percent aspirin and 8.43% for my percent yield could you include that in the expiation too
thank you!!
Transcribed Image Text:### Data
#### Table 1: Beer's Law Data for Salicylic Acid Standard Solutions
| Trial | Concentration (mol/L) | Absorbance |
|-------|-----------------------|------------|
| 1 | 5.79 x 10^-4 | 0.631 |
| 2 | 4.63 x 10^-4 | 0.403 |
| 3 | 3.48 x 10^-4 | 0.277 |
| 4 | 2.32 x 10^-4 | 0.72 |
#### Table 2: Salicylic Acid Standard Stock Solution
- **Initial mass salicylic acid (g)**: 0.414
- **Moles of salicylic acid (mol)**: 1.45 x 10^-3
- **Initial molarity of salicylic acid (mol/L)**: 5.79 x 10^-3
#### Table 3: Test of the Purity of the Synthesized Aspirin
- **Initial mass of aspirin sample (g)**: 0.414g
- **Absorbance of aspirin sample**: 0.148
- **Concentration of salicylic acid (mol/L)**: 1.45 x 10^-7 mol/L
- **Moles of salicylic acid in aspirin sample (mol)**: 4.697 x 10^-4 moles
- **Mass of salicylic acid in aspirin sample (g)**: 6.48 x 10^-2
- **Mass of aspirin in sample (g)**: 0.3492g
- **Percent aspirin in sample (%)**: 84.3%
### Calculations
This section likely involves calculations related to the concentrations and amounts of salicylic acid and aspirin based on the absorbance data and initial masses. Specific equations such as Beer's Law or stoichiometric calculations could be involved, but they are not detailed in the image.
![### Graph: Absorbance vs. Concentration
#### Description:
The graph illustrates the relationship between absorbance and concentration of salicylic acid standard solutions. It displays a linear relationship, indicating adherence to Beer’s Law.
- **X-axis:** Represents the concentration of salicylic acid in mol/L, ranging from 0 to 4 mol/L.
- **Y-axis:** Represents absorbance, ranging from 0.1 to 0.7.
#### Graph Details:
- The data points are represented by a dotted line.
- A best-fit line is drawn through the data points.
- The linear equation for the best-fit line is:
\[
y = -0.1803x + 0.7965
\]
where \( y \) is the absorbance and \( x \) is the concentration.
- The coefficient of determination (\( R^2 \)) is 0.9892, indicating a strong linear correlation between absorbance and concentration.
#### Figure Reference:
- **Figure 1:** Beer’s Law Calibration Curve for Salicylic Acid Standard Solutions
This graph serves as a calibration curve that can be used to determine unknown concentrations of salicylic acid by measuring absorbance.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9d353b8f-29b7-4b65-b20b-402aa69a76cb%2F7d5db0a6-a885-4a03-a93e-f3ec70651f1e%2Fig4o1h_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Graph: Absorbance vs. Concentration
#### Description:
The graph illustrates the relationship between absorbance and concentration of salicylic acid standard solutions. It displays a linear relationship, indicating adherence to Beer’s Law.
- **X-axis:** Represents the concentration of salicylic acid in mol/L, ranging from 0 to 4 mol/L.
- **Y-axis:** Represents absorbance, ranging from 0.1 to 0.7.
#### Graph Details:
- The data points are represented by a dotted line.
- A best-fit line is drawn through the data points.
- The linear equation for the best-fit line is:
\[
y = -0.1803x + 0.7965
\]
where \( y \) is the absorbance and \( x \) is the concentration.
- The coefficient of determination (\( R^2 \)) is 0.9892, indicating a strong linear correlation between absorbance and concentration.
#### Figure Reference:
- **Figure 1:** Beer’s Law Calibration Curve for Salicylic Acid Standard Solutions
This graph serves as a calibration curve that can be used to determine unknown concentrations of salicylic acid by measuring absorbance.
Expert Solution
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Interpretation:
To explain the data of the graph and and spectrophotometric analysis of aspirin.
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