Urgent. The melting point of pure acetylsalicylic acid is 135 degrees celsius. Comment on the purity of your product based on its melting point range. My melting point range was 105-115. I do not even know where to start for this question. Could you please help?
The melting point range tells you how pure the sample is. Very pure samples have a small range (of the order of 0.5-1or 2 degrees C) while impure samples have a much higher range. Your sample, with a range of 10 degrees tells you the purity is not very high. Impurities also LOWER the melting point and you will note the m.p. of your material is lower than it should be.
Of course, I can help you with that!
When it comes to determining the purity of a compound using its melting point, we compare the observed melting point range of the sample with the known melting point range of the pure compound. In this case, the known melting point range of pure acetylsalicylic acid is 135 degrees Celsius.
Based on the information you provided, your observed melting point range was 105-115 degrees Celsius. This means that the melting point range of your sample is significantly lower than the known melting point of pure acetylsalicylic acid.
A narrow and well-defined melting point range close to the known value of the pure compound indicates a high level of purity for the sample. In contrast, a broader or lower observed melting point range suggests the presence of impurities in the sample.
In your case, the observed melting point range of 105-115 degrees Celsius is considerably lower than the known melting point of 135 degrees Celsius. This discrepancy suggests the presence of impurities in your product.
To further investigate the purity of your product, additional tests could be performed. One common method is to conduct a recrystallization process to purify the sample. Recrystallization involves dissolving the impure compound in a suitable solvent and allowing it to slowly cool down to reform pure crystals. By repeating this process a few times, you may be able to obtain a purer sample with a narrower and more accurate melting point range.
Remember, the comparison of observed and known melting point ranges is just one method to assess the purity of a compound, and it should be supplemented with other analytical techniques for a more comprehensive analysis.
I hope this explanation helps you understand how to evaluate the purity of a compound based on its melting point range. If you have any further questions, please, let me know!
To determine the purity of a product based on its melting point range, you need to compare the observed melting point range to the known melting point of the pure compound. In this case, the known melting point of pure acetylsalicylic acid is 135 degrees Celsius.
If your observed melting point range was 105-115 degrees Celsius, which is significantly lower than the known melting point, it suggests that the product you tested is impure. The presence of impurities can cause the melting point of a substance to decrease and broaden the melting point range.
Therefore, based on the information provided, the product you tested appears to be impure.