A student obtained a solid product in a laboratory synthesis. To verify the identity of the solid, she measured its melting point and found that material melted over a 12 celcius range. After it has cooled, she measured the melting point of the same sample again and found that this time the solid had a sharp melting point. A material is said to have a sharp melting point if the range is less than 5 celcius, and a material is said to have a broad melting point if the range is greater than about 5 celcius. Pure compounds characteristically have a sharp melting range while most mixed or impure compounds have a broad melting range. Why there are the two melting points?
A student obtained a solid product in a laboratory synthesis. To verify the identity of the solid, she measured its melting point and found that material melted over a 12 celcius range. After it has cooled, she measured the melting point of the same sample again and found that this time the solid had a sharp melting point. A material is said to have a sharp melting point if the range is less than 5 celcius, and a material is said to have a broad melting point if the range is greater than about 5 celcius. Pure compounds characteristically have a sharp melting range while most mixed or impure compounds have a broad melting range. Why there are the two melting points?
Introductory Chemistry: An Active Learning Approach
6th Edition
ISBN:9781305079250
Author:Mark S. Cracolice, Ed Peters
Publisher:Mark S. Cracolice, Ed Peters
Chapter2: Matter And Energy
Section: Chapter Questions
Problem 35E
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A student obtained a solid product in a laboratory synthesis. To verify the identity of the solid, she measured its melting point and found that material melted over a 12 celcius range. After it has cooled, she measured the melting point of the same sample again and found that this time the solid had a sharp melting point. A material is said to have a sharp melting point if the range is less than 5 celcius, and a material is said to have a broad melting point if the range is greater than about 5 celcius. Pure compounds characteristically have a sharp melting range while most mixed or impure compounds have a broad melting range. Why there are the two melting points?
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