2006-08-26 12:24:34 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
When you distill a substance you use existing data from distillation columns in industry references from published literature. By inputting the temperature, pressure and other parameters into a computer program, the program will compute the purity of the outlet streams. This purity will be compared to the reported purity. Based on the results from this analysis.
Example, take a pure aspirin tablet, Bayer, take some raw acetylsalicylic acid. Compare both.
Physical data
Density1.40 g/cm3
Melt. point136°C (277°F)
Boiling point140°C (284°F)
Solubility in water4.6 mg/mL (20°C)
2006-08-26 12:40:38 · answer #1 · answered by god knows and sees else Yahoo 6 · 0⤊ 1⤋
Pure substances have an exact boiling point. Any impurity would raise the boiling point. and make it have a range of time it was boiling.
2006-08-26 19:39:45 · answer #2 · answered by science teacher 7 · 0⤊ 0⤋
well if the substance in question has a known boiling point, any impurities would cause that point to either be higher or lower than the stated point.
2006-08-26 19:34:57 · answer #3 · answered by knightedtraveller 2 · 0⤊ 0⤋