The melting point of pure aspirin acetylsalicylic acid is around 135-136C. To determine the melting point of the aspirin sample obtained from the drugstore, you would need to perform a melting point experiment using a melting point apparatus.To do this, you would crush the aspirin tablet into a fine powder and place a small amount of the sample into a capillary tube. Then, insert the capillary tube into the melting point apparatus and slowly heat the sample while observing the temperature at which it starts to melt and the temperature at which it completely melts.Once you have the melting point range of the drugstore aspirin sample, you can compare it to the melting point of pure aspirin. If the melting point of the drugstore sample is lower than that of pure aspirin, it may indicate the presence of impurities or other ingredients in the tablet. However, it is important to note that commercial aspirin tablets often contain additional ingredients, such as binders and fillers, which can affect the melting point.While melting point data can provide some information about the purity of a sample, it is not a definitive method for determining purity. Other analytical techniques, such as high-performance liquid chromatography HPLC or gas chromatography-mass spectrometry GC-MS , would be more appropriate for accurately determining the purity of the aspirin sample.