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Calorimetry is a scientific technique used to determine the concentration of colored compounds in solutions. This experiment aimed to measure the concentration of copper sulfate solutions using the Beer–Lambert law and a colorimeter. Standard solutions were prepared, and the colorimeter was calibrated to ensure accurate readings. Serial dilutions of the copper sulfate solutions were made, and absorbance measurements were taken. The data obtained were used to create a calibration curve, allowing us to determine the concentration of unknown samples.
The experiment was conducted with precision and accuracy by calibrating instruments, following proper procedures, and minimizing errors. The results were analyzed to calculate the concentrations of the unknown samples.
Calorimetry is the measurement of light intensity passing through a sample. It is a quantitative analysis technique that assesses how much light is absorbed by a substance, which is inversely proportional to its concentration. The Beer–Lambert law defines the relationship between absorbance and concentration, stating that higher concentration results in greater absorbance.
The aim of this experiment is to determine the concentration of copper sulfate solutions using calorimetry and the Beer–Lambert law.
The following materials were used in the experiment:
The experiment was conducted as follows:
The data obtained from the experiment were used to create a calibration curve, relating the concentration of copper sulfate solutions to their absorbance values.
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The concentration of the unknown samples was determined using this curve.
| Concentration of Copper Sulfate (mol.dm³) | 1 | 2 | 3 | Average |
|---|---|---|---|---|
| 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 0.2 | 0.24 | 0.26 | 0.28 | 0.26 |
| 0.4 | 0.58 | 0.61 | 0.59 | 0.59 |
| 0.6 | 0.947 | 0.952 | 0.952 | 0.95 |
| 0.8 | 1.269 | 1.276 | 1.271 | 1.27 |
| 1.0 | 1.532 | 1.539 | 1.532 | 1.53 |
| Unknown 1 | 0.825 | 0.828 | 0.825 | 0.82 |
| Unknown 2 | 0.321 | 0.322 | 0.321 | 0.32 |
The experiment was conducted with precision and accuracy. To ensure accuracy, the colorimeter was calibrated, and meticulous techniques were employed to transfer and measure the solutions. A calibration curve was created, and the unknown sample concentrations were determined with confidence.
In conclusion, this experiment successfully determined the concentration of copper sulfate solutions using calorimetry and the Beer–Lambert law. The results were obtained with accuracy and precision, demonstrating the effectiveness of the technique.
Calorimetry for Copper Sulfate Concentration Determination. (2024, Jan 11). Retrieved from https://studymoose.com/document/calorimetry-for-copper-sulfate-concentration-determination
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