Isolation and Identification of Orange Peel Oil Week 2

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Organic Chemistry Lab 3124
 
Rachel Sierra
Hugo Tapia
Terese Marie Nuņez

Lab Materials
  • separatory funnel
  • thermowell heater
  • 25ml round bottom flask
  • boiling chips
  • distillation kit
  • 5ml hexanes X3

Procedure

  • We poured the 100ml of orange-peel distillate into the separatory funnel
  • Added 5ml of hexanes into the Erienmeyer flask to rinse the flask
  • We took the 5ml in the flask and poured it into the separatory funnel
  • We closed the funnel with a glass stopper
  • We then mixed the solution and vented while mixing
  • We then extracted the water from the mixed solution to isolate the orange-peel oil and then collected the oil in the 25ml round bottom flask
  • We repeated the process two times
  • We added three boiling chips into the 25ml round bottom flask
  • We assembled the simple distillation kit  (see picture)
  • We plugged in thermowell heater and distillation began
  • Observed distillation until all the water was in the receiver and the orange oil in the boiler flask
  • Distillation was terminated
  • We then weighed the 25ml flask with the resting orange oil

 

 

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  Observations
  • Distillation began at 62° Celsius
  • Took approx. 45 min. for distillation process to terminate
  • The 25mL round bottom flask with the boiling chips weighed 25.93g
  • The 25 mL found bottom flask with the boiling chips and the distilled orange peel oil weighed 26.79g
  • The orange peel oil now longer had a orange scent

 

Conclusion
  • After the orange peel oil was completely distilled its weight was .86g(weight of the round bottom flask+3 boiling chips - weight of round bottom flask + 3 boiling chips + orange oil)
  • 26.79g - 25.93g=.86g
  • The weight of the distilled orange oil compared to the weight of full orange peel(71.1g) gave us the percentage of the orange peel oil compared to the orange peel
  • .86g/71.1g=1.2%

 

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