Exam Cards - Unit 2: Alcohols, Halogenoalkanes & Analysis

Question 1

Define a primary alcohol.

Answer 1

An alcohol where the -OH group is bonded to a carbon atom that is bonded to one other carbon atom.

Question 2

Define a secondary alcohol.

Answer 2

An alcohol where the -OH group is bonded to a carbon atom that is bonded to two other carbon atoms.

Question 3

Define a tertiary alcohol.

Answer 3

An alcohol where the -OH group is bonded to a carbon atom that is bonded to three other carbon atoms.

Question 4

Why do alcohols have relatively high boiling points compared to other non-polar compounds?

Answer 4

They can form hydrogen bonds between the O and H atoms.

Question 5

Which two methods are used to produce ethanol?

Answer 5

Fermentation of sugars and the hydration of ethene.

Question 6

What is the formula for the hydration of ethene?

Answer 6

H2C=CH2 + H2O (reversible arrow and phos acid catalyst) CH3CH2OH

Question 7

Why is yeast used in the fermentation of sugars to ethanol?

Answer 7

It produces an enzyme that converts sugars such as glucose into ethanol and carbon dioxide.

Question 8

What is the general formula for alcohols?

Answer 8

Cnh2n+1OH