Unit 3 - Alcohols, Carboxylic Acids and Esters Flashcards Preview

Chemistry Unit 2 + 3 > Unit 3 - Alcohols, Carboxylic Acids and Esters > Flashcards

Flashcards in Unit 3 - Alcohols, Carboxylic Acids and Esters Deck (16):
1

What is a functional group?

A group of atoms which gives a group of molecules their characteristic properties

2

What functional group do Alcohols have?

-OH

3

Name the 3 members of the alcohol group and what are their structures?

Methanol CH3 OH

 Ethanol CH3 CH2OH

Propanol CH3 CH2 CH2 OH

4

Name the properties of methanol, ethanol and propanol (5)

  • Dissolve in water to give a neutral solution
  • React with sodium to produce hydrogen and alkoxides (similar reaction with water)
  • Burn in air to give carbon dioxide and water
  • Are used as fuels and solvents
  • Ethanol is the mail alcohol in alcoholic drinks

5

Which is the stronger acid out of ethanoic acid and hydrochloric acid?

Hydrochloric acid

6

What functional group do Carboxylic acids have?

-COOH 

7

Why are caboxylic acids weak acids?

Because they don't ionise completely when in aqueous solution

8

Carboxylic acids show the typical reactions of acids, for example?

Reacting with carbonates to produce carbon dioxide, but they react more slowly

9

What is the word formula for the reaction between ethanoic acid and sodium carbonate?

ethanoic acid + sodium carbonate → sodium ethanoate + carbon dioxude + water

10

What do carboxylic acids produce when dissolved in water?

Acidic solutions

11

How can ethanoic acid be made?

By oxidising ethanol

12

What functional group do Esters have?

-COO-

13

How are esters produces

Wen carboxylic acids react with alchols

14

What catalyst is used to make esters?

Sulphuric acid

15

What is the formula for the produciton of esters?

Acid + alcohol <=> ester + water

16