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)
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1
Q

What is a functional group?

A

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

2
Q

What functional group do Alcohols have?

A

-OH

3
Q

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

A

Methanol CH3 OH

Ethanol CH3 CH2OH

Propanol CH3 CH2 CH2 OH

4
Q

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

A
  • 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
Q

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

A

Hydrochloric acid

6
Q

What functional group do Carboxylic acids have?

A

-COOH

7
Q

Why are caboxylic acids weak acids?

A

Because they don’t ionise completely when in aqueous solution

8
Q

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

A

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

9
Q

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

A

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

10
Q

What do carboxylic acids produce when dissolved in water?

A

Acidic solutions

11
Q

How can ethanoic acid be made?

A

By oxidising ethanol

12
Q

What functional group do Esters have?

A

-COO-

13
Q

How are esters produces

A

Wen carboxylic acids react with alchols

14
Q

What catalyst is used to make esters?

A

Sulphuric acid

15
Q

What is the formula for the produciton of esters?

A

Acid + alcohol <=> ester + water

16
Q
A