1) During the distillation process at the end of procedure 1, why did the produc
ID: 1006929 • Letter: 1
Question
1) During the distillation process at the end of procedure 1, why did the product remaining in the distilling flask?
The product has a higher melting point than the melting point of the impurities.
The product has a lower melting point than the melting point of the impurities.
The product has a higher boiling point than the boiling point of the impurities.
The product has a lower boiling point than the boiling point of the impurities.
2) The melting point of a compound is often used to
a. characterize a sample
b. make sure that the procedure worked
c. test for purity
d. both a and c
a.The product has a higher melting point than the melting point of the impurities.
b.The product has a lower melting point than the melting point of the impurities.
c.The product has a higher boiling point than the boiling point of the impurities.
d.The product has a lower boiling point than the boiling point of the impurities.
Explanation / Answer
ANSWER
1. In distillation process we make use of boiling points. Procedure 1 has not been mentioned. Part (c) is the correct answer, because only that substance will remain in he distillation flask that has higher boiling point.
2. Part (d) is the correct answer. Melting point is used for both to check purity and characterization of the sample.
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