1. What is the functional group being investigated today?

2. Carboxylic acids To be able to recognise a carboxylic acids.
Learning Objectives:
To be able to recognise a carboxylic acids.
To investigate some reactions of carboxylic acids.
To apply prior knowledge of acid reactions to predict products of carboxylic acid reactions.
Keywords: Carboxylic acid, functional group
Homework:
Complete the worksheet “Acids for smoother skin”. An insight into the applications of carboxylic acids
Due: Tues 9th Feb

3. Some carboxylic acids around usH
Ascorbic acid
Ethanoic acid
Oxalic acid
Tartaric acid
Citric acid
Tannic acid

4. Some carboxylic acids around us
Ethanoic acid
Oxalic acid
Lactic acid
Pentanoic acid

5. Activity – Carboxylic acids and their reactions
Complete Ac7.3 for either methanoic or ethanoic acid carboxylic acid.
Draw the structure of your carboxylic acid.
Write a general word equation for each reaction using your knowledge of how acids react.
Use your book (p ) to help you write word equations for each reaction of your chosen carboxylic acid .
Extension: Construct a balanced symbol equation for each reaction. O H
Caution: When heating, do so VERY gently as it is likely to boil over.
Always heat with the boiling tube at an angle AWAY from you and your peers.

6. Three key reactions of carboxylic acids
Metal + carboxylic acid
Metal oxide + carboxylic acid
Metal carbonate + carboxylic acid

7. True or false Ethanol is a carboxylic acid
The functional group of a carboxylic acid is COOH
True
Carboxylic acids react with metals to produce a salt and hydrogen
True
Carboxylic acids have a lower pH than acids such as HCl and H2SO4
False
When ethanoic acid reacts with sodium oxide the products are sodium ethanoate and water
True

8. Can you…? Recognise a carboxylic acid.
Predict the products of reactions between carboxylic acids and metals, metal oxides and metal carbonates.
Write a word equation for each of the reactions investigated today.
Traffic light each one with your colour cards.