C11: Alcohols, Carboxylic Acids and Esters

Question 1

Alcohols Functional Group

Answer 1

-O-H

Question 2

Carboxylic Acid Functional Group

Answer 2

-C=O-O-H

Question 3

Ester Functional Group

Answer 3

-C=O-O (CH)

Question 4

Ethanol + Oxygen =

Answer 4

Carbon Dioxide + Water

Question 5

What happens when sodium reacts with alcohols?

Answer 5

> The reaction is similar to that of water, but less vigorous.
In ethanol the solution formed is sodium ethoxide.
Emits hydrogen.

Question 6

Ethanol + Oxygen atoms from an oxidising agent =

Answer 6

Ethanoic acid + Water

Question 7

Difference between strong and weak acids.

Answer 7

Strong acids ionise completely in water.

Strong acids therefore have a higher concentration of H+ ions in their solution.

Question 8

What 3 things are needed to make an ester?

Answer 8

> Alcohol
Carboxylic Acid
A strong acid catalyst.

Question 9

Carboxylic Acid + Alcohol =

Answer 9

Ester + Water

Question 10

Properties of esters

Answer 10

> Volatile
Smell distinctive
Used in perfumes and food flavourings.