. Empirical Data (include units where appropriate)
A. Instrument Parameters
1. Instrument Name __________________
2. Mobile phase gas ______ Flow Rate ______
3.. Column Description
a. Liquid stationary phase identity ________________
b. Column length and diameter ________________
3. Oven / Column Temperature _________________
4. Bridge Current _______________
B. Retention Times
Compound Name Standard A Standard B Standard C Standard D Standard E*
*Average of three trials
II. Physical Constants
Component MW bp (˚C) Other*
3-pentanone
toluene
methylcyclohexane
4-heptanone
cyclopentanone
*You may wish to report literature values related to polarity
References for physical constants:
Chemical Structures for Components:
III. Results
Instrument Calibration based on 1:1:1:1:1 molar composition of Standard E.
Component Peak Area Integrations
(use 4 sig fig) Response Factors (f)
(trial number ) 1 2 3 1 2 3 Avg f
2-pentanone
toluene
methylcyclohexane
4-heptanone
cyclopentanone
Unknown Analysis
Retention Times
Peak # Trial 1 Trial 2 Trial 3 Unknown Assignment
1
2
3
Integrations and Mole %
Component Raw Peak Area
(use 4 sig fig) Corrected Peak Area
Mole %
(use 3 sig fig)
(trial number ) f 1 2 3 1 2 3 1 2 3 Avg
1)
2)
3)
IV. Discussion
Explain the elution order of the five known compounds.
Describe reasonable sources of error in the quantitative analysis of the unknown’s composition. HINT: Think about all aspects of the experiment, even ones done for you.