How do impurities affect the boiling and melting points of a substance? Give examples please.
Answers
Explanation:
Impurities present in a solid organic compound tend to have 2 effects on the melting point. First, they tend to lower the overall melting point of the compound versus the value for pure material. Second, they tend to increase the range of the melting point values.
Why do the impurities increase or decrease the melting point? ...
→ These impurities thus work as barriers for the molecules of the compound to make intermolecular forces with themselves. Less IMF means that there would be less energy needed for overcoming the activation energy, thus a lower melting point
Impurities present in a solid organic compound tend to have 2 effects on the melting point. First, they tend to lower the overall melting point of the compound versus the value for pure material. Second, they tend to increase the range of the melting point values.
Why do the impurities increase or decrease the melting point? ...
→ These impurities thus work as barriers for the molecules of the compound to make intermolecular forces with themselves. Less IMF means that there would be less energy needed for overcoming the activation energy, thus a lower melting point