In Part A, you determined (with a Mel-Temp apparatus) that an experimental melti

Question

In Part A, you determined (with a Mel-Temp apparatus) that an experimental melting point for your recrystallized sulfanilamide solid to be 160.1 - 168.5 degree C. What can you infer about the purity of the product? Select the best choice Use any physical constants provided from the link below. http://www.sigmaaldrich.com/catalog/product/sial/s9251?lang=en&region;=US the sample doesn't contain sulfanilamide could be pure ethanol could be a pure sample of sulfanilamide could be impure sulfanilamide (impurity cannot be determined by mp alone) could be pure benzoic acid could be 95% ethanol

Explanation / Answer

Pure substances have narrow melting point range that is, it should not exceed 1.2oC.
Even though the literature melting point range of sulfanilamide is not mentioned in the
question, we can say that it could be impure sulfanilamide

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