Alcohols Flashcards Preview

National 5 Chemistry > Alcohols > Flashcards

Flashcards in Alcohols Deck (16)
1

What do alcohols functional groups contain??

-OH

2

General formula of an alcohol?

CnH2n+1OH

3

As the number of carbon atoms in the alcohol increase the boiling point ????

Increases

4

As the number of carbon atoms in the alcohol increases the solubility????

Decreases

5

Carboxylate acids end in

-OIC ACID

6

Carboxylic acids contain which functional group??

-COOH

7

General formula of a carboxylic acid

CnH2n+1 COOH

8

Uses of carboxylic acids

Preservatives
Feedstocks for dyes and paints
Manufacture of nylon and polyester
Drug preparation

9

Esters are formed by

Condensation reaction between an alcohol and a carboxylic acid

10

What happens in a condensation reaction?

The alcohol and carboxylic acid molecules join together by the reaction of their functional groups to make water

11

How is an ester link formed

By the reaction of the hydroxyl group with a carboxyl group

12

Compare straight chain alkane to straight chain alcohol with the same number of carbon atoms

Alcohol has a higher boiling point than alkanes

13

Compare alcohol isomers with -OH on carbon 1 and -OH on Carbon 2

Alcohol with -OH group on the 1st carbon has a higher boiling point

14

Are alcohols soluble in water?

Yes
As the number of carbon atoms in alcohol increases, the solubility if the alcohol in water decreases

15

Uses for alcohols

Alcoholic drinks
Solvents
Fuel
Car de icers and thermometers
Feedstock eg vinegar

16

What do alcohol names end in??

-OL