Carboxylic Acids

Question 1

Functional group of carboxylic acids:

Answer 1

-COOH

Question 2

How are carboxylic acids formed?

Answer 2

Reaction of alcohol with oxidising agent.

Question 3

Examples of things with carboxylic acid?

Answer 3

ant bites
stinging nettles
butter
aspirin

Question 4

Ethanoic Acid

Answer 4

1. H
   I
   H-C-C = O
   I I
   H OH

Question 5

Carboxylic acids are acids, so they…

Answer 5

release hydrogen ions in water.

Question 6

When we say that carboxylic acids have a higher pH than a strong acid at the same concentration, it means…

Answer 6

that carboxylic acids are weaker acids compared to strong acids.

Question 7

Reaction of carboxylic acid with water:

Answer 7

dissolves in water to form an acidic solution

Question 8

Reaction of carboxylic acid with metal:

Answer 8

although it is slower than with a strong acid, bubbling is still seen. This means that a gas is given off, that gas being hydrogen.

products: salt + hydrogen

Question 9

Reaction of carboxylic acid with carbonate:

Answer 9

Fizzing indicates that a gas is made:

salt + water + CO2

Question 10

Reaction of carboxylic acid with alcohol:

Answer 10

ESTER MADE

Question 11

How are esters made and in what conditions?

Answer 11

They are made by reacting an alcohol with a carboxylic acid and heat or an acid catalyst is required. The reaction is a reversible reaction.

Question 12

Esters can be synthetically or naturally formed chemicals. they are used in…

Answer 12

perfumes and flavourings

Question 13

Ethanoic acid + ethanol makes…

Answer 13

Ethyl Ethanoate + water