TAMU CHEM 101 - EXP 12 (2 pages)

Previewing page 1 of 2 page document View the full content.
View Full Document

EXP 12



Previewing page 1 of actual document.

View the full content.
View Full Document
View Full Document

EXP 12

65 views


Pages:
2
School:
Texas A&M University
Course:
Chem 101 - Fund Of Chemistry I
Fund Of Chemistry I Documents

Unformatted text preview:

Leen Alyaseen Summary of Results In this experiment we used sulfuric acid and phosphoric acid to dehydrate cyclohexanol to form cyclohexene by elimination We performed simple distillation and then purified the cyclohexene with saturated sodium chloride We started with 2 5 grams of cyclohexanol and finished with 0 50 grams of cyclohexene product This gives us a crude yield of 64 08 We then performed the Bromine Test on our product it was clear This means that it is positive so our product does contain a double bond For a second classification test we performed the Permanganate test which turned brown This means it is also positive and our product is an alkene Lastly we obtained an IR spectrum of the product There were peaks at 3022 90 cm 1 showing an sp2 C C H stretch and at 1652 66 cm 1 showing a C C stretch Errors One possible error was if during the purification of cyclohexene the student didn t remove all of the aqueous layer This would contaminate the product therefore altering the IR results Also if the conical vial was still wet when it was weighed it would alter the measured weight of the product It showed that accidentally removed some cyclohexene with the aqueous layer Conclusion The experiment must be a success since the IR spectrum showed peaks at 3022 90 cm 1 showing a sp2 C C H stretch and at 1652 66 cm 1 showing a C C stretch These both prove that there is a double bond and that it is a cyclic compound This means that cyclohexanol must have successfully been dehydrated and cyclohexene was formed The positive results from the Bromine and Permanganate Test also confirm that there was a double bond formed Since we obtained a percent yield of only 64 08 this must have been an error on our part If the conical vial was still wet when we weighed it for the empty weight it would give us results that show a smaller product weight It is also possible that when removing the aqueous layer we accidentally removed some cyclohexene with it



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view EXP 12 and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view EXP 12 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?