Salts

Question 1

What is the first solubility rule?

Answer 1

That most nitrate(NO3-) salts are soluble

Question 2

What is the second solubility rule?

Answer 2

Most salts containing the alkali metal ions (Li+, K+, Cs+, Rb+) and the ammonium ion are soluble

Question 3

What is the third solubility rule?

Answer 3

Most chloride, bromide and iodide salts are soluble.Exceptions are salts containing the ions Ag+, Pb2+ and Hg2+.

Question 4

What is the 4th solubility rule?

Answer 4

Most sulfate salts are soluble. Notable exceptions are BaSO4, PbSO4, HgSO4 and CaSO4.

Question 5

What is the 5th solubility rule?

Answer 5

Most hydroxide salts are insoluble. The important soluble hydroxides are NaOH and KOH. The hydroxides of barium, strontium and calcium are marginally soluble.

Question 6

What is the 6th solubility rule?

Answer 6

Most sulfide (S2-), carbonate (CO32-) , chromate (CrO42-) and phosphate (PO43-) salts are insoluble

Question 7

Is zinc chromate soluble or insoluble, and why?

Answer 7

Soluble, most nitrate salts are soluble

Question 8

Is calcium carbonate soluble or insoluble, and why?

Answer 8

Insoluble, most carbonate salts are insoluble

Question 9

Is silver iodide soluble or insoluble, and why?

Answer 9

Insoluble, silver is an exception to rule 3

Question 10

Is ammonium carbonate soluble, or insoluble and why?

Answer 10

Soluble, ammonium ions are soluble

Question 11

Complete the displacement reaction for copper and magnesium nitrate (word equation)

Answer 11

Answer in book

Question 12

Complete the symbol equation for the displacement reaction between copper and magnesium nitrate

Answer 12

Answer in book

Question 13

Complete the word equation for the displacement reaction between magnesium and iron hydroxide

Answer 13

Answer in book

Question 14

Complete the symbol equation for the displacement reaction between magnesium and iron hydroxide

Answer 14

Answer in book

Question 15

Complete the word equation for the displacement reaction between barium and magnesium sulfate

Answer 15

Answer in book

Question 16

Complete the symbol equation for the displacement reaction between barium and magnesium sulfate

Answer 16

Answer in book

Question 17

Complete the word equation for the displacement reaction between lead and copper sulfate

Answer 17

Answer in book

Question 18

Complete the symbol equation for the displacement reaction between lead and copper sulfate

Answer 18

Answer in book

Question 19

Complete the word equation for the displacement reaction between iron and copper chloride

Answer 19

Answer in book

Question 20

Complete the symbol equation for the displacement reaction between iron and copper chloride

Answer 20

Answer in book

Question 21

Complete the word equation for the displacement reaction between copper and zinc chromate

Answer 21

Answer in book

Question 22

Complete the symbol equation for the displacement reaction between copper and zinc chromate

Answer 22

Answer in book

Question 23

What is the first reaction (word equation) in making copper sulfate?

Answer 23

Copper carbonate -≥ copper oxide + carbon dioxide

Question 24

What is the first reaction in making copper carbonate called?

Answer 24

A thermal decomposition reaction

Question 25

How many grams of copper oxide are heated?

Answer 25

2.5g

Question 26

What is the word equation for the second reaction in making copper sulfate salt?

Answer 26

Copper oxide + sulfuric acid -≥ copper sulfate + water

Question 27

How much sulfuric acid is used ?

Answer 27

25cm^3

Question 28

What does HRC stand for?

Answer 28

Hazard, Risk, Caution

Question 29

What visible colour change occurs when copper carbonate is broken down by heat?

Answer 29

Colour change from green to black

Question 30

Why is the sulfuric acid heated before adding in the copper oxide?

Answer 30

To increase the rate of reaction

Question 31

Should the evaporating basin be put straight over the Bunsen burner or on top of a beaker of water?

Answer 31

Over a beaker of water, so that it's not over heated.

Question 32

What is the colour of the calcium nitrate precipitate?

Answer 32

White

Question 33

What is the colour of the copper sulfate precipitate?

Answer 33

Light blue

Question 34

What is the colour of the cobalt chloride precipitate?

Answer 34

Dark blue

Question 35

What is the colour of the Iron II sulfate precipitate?

Answer 35

Green/yellow

Question 36

What is the colour of the iron III sulfate precipitate?

Answer 36

Brown

Question 37

What's the colour of the aluminium sulfate precipitate?

Answer 37

White

Question 38

What is the word and symbol equation for the sodium hydroxide and calcium nitrate displacement reaction?

Answer 38

Answer in book

Question 39

What is the word and symbol equation for the sodium hydroxide and copper sulfate displacement reaction?

Answer 39

Answer in book

Question 40

What is the word and symbol equation for the sodium hydroxide and cobalt chloride displacement reaction?

Answer 40

Answer in book

Question 41

What is the word and symbol equation for the sodium hydroxide and Iron II sulfate displacement reaction?

Answer 41

Answer in book

Question 42

What is the word and symbol equation for the sodium hydroxide and Iron III sulfate displacement reaction?

Answer 42

Answer in book

Question 43

What is the word and symbol equation for the sodium hydroxide and aluminium sulfate displacement reaction?

Answer 43

Answer in book