Acids & Bases

Question 0

All salts

Answer 0

All salts containing Na+, K+, NH4+ soluble.

Question 1

All nitrates

Answer 1

Soluble

Question 2

All chlorides

Answer 2

Soluble. Except PbCl2 and AgCl.

Question 3

All sulfates

Answer 3

Soluble. Except BaSO4, CaSO4, PbSO4

Question 4

All carbonates

Answer 4

Insoluble. Except Na2CO3, K2CO3, (NH4)2CO3

Question 5

Define an acid.

Answer 5

An acid is a substance that produces hydrogen ions when dissolved in water.

Question 6

What are some unreactive metals

Answer 6

Copper, silver, gold, platinum

Question 7

What are some reactive metals

Answer 7

Sodium, magnesium, potassium, calcium

Question 8

Define a salt.

Answer 8

A salt is an ionic compound formed when the hydrogen ion of an acid is replaced by a metallic ion or an ammonium ion.

Question 9

Define base.

Answer 9

A base is a metal oxide or hydroxide that reacts with an acid to produce a salt and water only.

Question 10

Define alkali.

Answer 10

An alkali is a soluble base which dissolves in water to produce OH- ions.

Question 11

Acid + base

Answer 11

Salt + water

Question 12

Acid + metal

Answer 12

Salt + Hydrogen

Question 13

Acid + carbonate

Answer 13

Salt + water + carbon dioxide

Question 14

Alkali + ammonium salt

Answer 14

Salt + water + ammonia

Question 15

Group I metal + water

Answer 15

Group I metal hydroxide + Hydrogen

Question 16

Use of hydrochloric acid

Answer 16

Remove impurities such as rust from steel and metal objects.

Question 17

Use of ethanoic acid

Answer 17

Food preservative. Flavour enhancer. Used to make adhesives such as glue.

Question 18

Use of phosphoric acid

Answer 18

Added to food and beverages for sour taste

Question 19

Use of dilute sulfuric acid

Answer 19

Used in car batteries; production of fertilizers.

Question 20

Use of concentrated sulfuric acid

Answer 20

Manufacture of detergents

Question 21

Use of magnesium oxide

Answer 21

Relieving gastric pain.

Question 22

Use of sodium hydroxide/potassium hydroxide

Answer 22

Preparation of soap and detergents

Question 23

Use of calcium hydroxide and calcium oxide

Answer 23

Reduce acidity in soil

Question 24

Use of ammonia solution

Answer 24

Use in production of fertilizers.

Question 25

Use of magnesium hydroxide

Answer 25

Used in toothpaste to neutralize acid on teeth. Relieving indigestion.

Question 26

Use of sulfuric acids in producing fertilizers.

Answer 26

Important starting material for the production of ammonium sulfate and superphosphate, which are active ingredients in fertilisers.

Question 27

Monobasic acid

Answer 27

An acid which dissociates to give one hydrogen ion.

Question 28

Dibasic acid.

Answer 28

An acid that dissociates to give 2 hydrogen ions.

Question 29

Hydrochloric acid pH

Answer 29

1

Question 30

Nitric acid pH

Answer 30

1

Question 31

Sulfuric acid pH

Answer 31

1

Question 32

Water pH

Answer 32

7

Question 33

Ethanoic acid pH

Answer 33

3

Question 34

Ammonia (aq) solution pH

Answer 34

10

Question 35

Sodium hydroxide pH

Answer 35

13

Question 36

Monobasic acid

Answer 36

An acid that dissociates to give one hydrogen ion per molecule in aqueous solution.

Question 37

Dibasic acid

Answer 37

An acid that dissociates to produce 2 hydrogen ions per molecule in aqueous solution.