imple Distillation The temperature was 76o C when the first drop of distillate was collected. Liquid was collected and the temperature gradually rose to 124 o C. Fraction 2 was taken when liquid was distilling at 124o C. Fractional Distillation The temperature was 77o C when the first drop of distillate was collected. Liquid was collected until the temperature reached 78 o C, then the temperature dropped. The temperature of the hot plate was increased and a second fraction of liquid was collected at 126 o C. a.) Based on the boiling points observed when the fractions were collected, what is the identity of the unknown compound isolated in fraction 1 and Fraction 2?

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Simple Distillation

The temperature was 76o C when the first drop of distillate was collected.

Liquid was collected and the temperature gradually rose to 124 o C.

Fraction 2 was taken when liquid was distilling at 124o C.

Fractional Distillation

The temperature was 77o C when the first drop of distillate was collected.

Liquid was collected until the temperature reached 78 o C, then the temperature dropped.

The temperature of the hot plate was increased and a second fraction of liquid was collected at 126 o C.

a.) Based on the boiling points observed when the fractions were collected, what is the identity of the unknown compound isolated in fraction 1 and Fraction 2?

 

Possible Unknowns
Compound Name
Boiling Point Range
Ethyl Acetate
77-78 °C
2-Butanone
80-81°C
2-Propanol
Ethyl Butyrate
82-83 °C
120-121 °C
Butyl Acetate
126-127 °C
3-Methyl-1-butanol
131-132 °C
Transcribed Image Text:Possible Unknowns Compound Name Boiling Point Range Ethyl Acetate 77-78 °C 2-Butanone 80-81°C 2-Propanol Ethyl Butyrate 82-83 °C 120-121 °C Butyl Acetate 126-127 °C 3-Methyl-1-butanol 131-132 °C
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