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Measure the corrected retention times of these standards in order to positively identify sample peaks on the GC chromatogram of the distillate.
ALKENES - the products!
ALKENES - the products!
1. (1:1) mixture of 3-methylcyclohexene (1st peak) / 1-methylcyclohexene (2nd peak)
1. (1:1) mixture of 3-methylcyclohexene (1st peak) / 1-methylcyclohexene (2nd peak)
Use the ruler to measure the distance (cm) from the air peak to sample peak
Convert the distance into corrected retention time (tR'), sec using the chart recorder speed: 2.5 cm / min
Measure tR' of both sample peaks
Discuss: Which alkene do you expect to elute from the column first?
* Did you run the reaction with 1-methylcyclohexanol, and are expecting to see a chromatogram of methylenecyclohexane standard? Out of luck! Just use the same corrected tR' for 3-methylcyclohexene. Discuss: WHY?
ALCOHOLS - the starting material!
ALCOHOLS - the starting material!
2. Methylcyclohexanol
2. Methylcyclohexanol
measure tR' for the alcohol that you started with – (a) or (b)
(a) 1-methylcyclohexanol
(a) 1-methylcyclohexanol
(b) 2-methylcyclohexanol
(b) 2-methylcyclohexanol
Next, select your distillate based on your starting material!
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