Alcohol Dehydration Lab

Question 1

How does the primacy of alcohols (1, 2, 3*) relate to their reactivity in dehydrations?

Answer 1

3* will produce alkenes, and will have higher reaction temperatures and possible rearrangements. 1* and 2* will produce ethers, with lower reaction temperatures, and a product that is removable by distillation.

Question 2

What three test reagents will we use?

Answer 2

Br2, KMnO4, and Ce(NH4)2(NO3)6.

Question 3

What do the test reagents we use test for?

Answer 3

They test for alkene double bonds, or alcohols (Ce)

Question 4

What is the visible sign of a positive test?

Answer 4

The signs of a positive test are a loss of bromine color, a loss of permanganate color (turning brown), and the formation of a colored complex.

Question 5

What is the structure of cyclohexanol?

Answer 5

cyclohexane, with a OH attached

Question 6

What is the structure of cyclohexene?

Answer 6

cyclohexane, with a double bond

Question 7

What is the formula for phosphoric acid?

Answer 7

h3PO4

Question 8

What is the formula for sulfuric acid?

Answer 8

h2so4

Question 9

What is the formula for sodium sulfate?

Answer 9

na2so4

Question 10

What is the formula for bromine?

Answer 10

br2

Question 11

What is the formula for dichloromethane?

Answer 11

ch2cl2

Question 12

What is the formula for ceric ammonium nitrate?

Answer 12

ce(nh4)2(no3)6

Question 13

What is the formula for dimethoxyethane?

Answer 13

ch3och2ch2och3