Question

When running melting point tests rank and explain which will have the higher melting point, middle...

When running melting point tests rank and explain which will have the higher melting point, middle melting point, and lowest melting point:

a.) Impure Phthalic Acid

b.) Pure Phthalic Acid

c.) Crystalline Phthalic Acid

Homework Answers

Answer #2

a.) Impure Phthalic Acid --> impurities will lower the melting point, typically due to lower BP of impurities nad colligativ eproperties of solvent/solutes

b.) Pure Phthalic Acid --> this will be the middle value, since it contains no other species/sample, it will be the "acutal value"

c.) Crystalline Phthalic Acid = this is the highest melting point, due to the crystalline strucutre formed, the crystal lattices require more energy to "break" in order to melt

c > b > a

answered by: anonymous
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