2.1.4

Question 1

Hydrochloric acid

Answer 1

HCL

Question 2

Sulphuric acid

Answer 2

H2SO4

Question 3

Nitric acid

Answer 3

HNO3

Question 4

Ethanoic acid

Answer 4

C2H4O2
CH3COOH

Question 5

Sodium hydroxide

Answer 5

NaOH

Question 6

Potassium hydroxide

Answer 6

KOH

Question 7

Ammonia

Answer 7

NH3

Question 8

Solute

Answer 8

Substance that is dissolved

Question 9

Solvent

Answer 9

Liquid substance is dissolved in

Question 10

Convention from cm3 to dm3

Answer 10

/1000

Question 11

Units of concentration

Answer 11

gdm-3
Moldm-3

Question 12

n=

Answer 12

C x V

Question 13

What is a standard solution

Answer 13

A solution of a known concentration

Question 14

What do you need to make a standard solution

Answer 14

A known mass of substance dissolved in a known volume

Question 15

What technique do you use to get the known mass

Answer 15

Weighing by difference
Take weight of scoop after transfer away from weight of substance and scoop

Question 16

How do you get a known volume

Answer 16

Use a volumetric flask

Question 17

Definition of an acid

Answer 17

Compound that dissolves in water to form a solution that contains hydrogen ions and has a ph less than 7

Question 18

Definition of an alkali

Answer 18

A compound that dissolved in water to form a solution that contains hydroxide ions amd has a ph more than 7

Question 19

What is a concentrated or dilute acid

Answer 19

The measure of moles in the given volume

Question 20

What is a strong or weak acid

Answer 20

The measure of degree of dissociation

Question 21

Strong acid definition

Answer 21

Fully dissociates into ions in water

Question 22

Weak acids definition

Answer 22

Only partially dissociates into ions in water

Question 23

Examples of strong acids

Answer 23

Hydrochloric acid
Sulfiric acid
Nitric acid

Question 24

Example of weak acids

Answer 24

Carbonic acid ( H2CO3)
Methanoic acid ( HCOOH)
Ethanoic acid ( CH3COOH)

Question 25

If a strong and weak acid has the same concentration what would be the differences

Answer 25

The strong acid would have a lower ph and a faster rate of reaction

Question 26

Define base

Answer 26

Any metal oxide or metal hydroxide OR A substance that accepts protons Most bases are insoluble those that are soluble are alkalis

Question 27

Define salt

Answer 27

Compound formed when hydrogen ions in an acid are replaced by metal ions or ammonium ions

Question 28

Acid + metal

Answer 28

Salt + hydrogen

Question 29

Acid + metal oxide

Answer 29

Salt+ water

Question 30

Acid + metal hydroxide

Answer 30

Salt + water

Question 31

Acid + metal carbonate

Answer 31

Salt + carbon dioxide + water

Question 32

Acid + metal hydrogencarbonate

Answer 32

Salt+ co2 + water

Question 33

Acid + ammonia

Answer 33

Ammonium salt