2. Inorganic AS

Question 1

what happens to the solubility of group 2 hydroxides as you go down the group?

Answer 1

it increases

Question 2

what is the general equation for the group 2 hydroxides dissolving in water?

Answer 2

Question 3

what happens to the solubility of group 2 sulfates as you go down the group?

Answer 3

it decreases

Question 4

what is the general equation for group 2 oxides with dilute HCl?

Answer 4

Question 5

what is the reaction of Be with oxygen,water, dilute HCl and dilute H2SO4?

Answer 5

Question 6

What is the reaction of Mg with oxygen,water,dilute HCl,dilute H2SO4?

Answer 6

Question 7

What is the reaction of Ca with oxygen, water, dilute HCl and dilute H2SO4?

Answer 7

Question 8

What is the reaction Sr with oxygen, water, dilute HCl and dilute H2SO4?

Answer 8

Question 9

What is the reaction of Ba with oxygen, water, dilute HCl and dilute H2SO4?

Answer 9

Question 10

what is the reaction of group 2 metals with oxygen?

Answer 10

Question 11

What do Sr and Ba form when reacted with oxygen?

Answer 11

a peroxide MO2

Question 12

What is the reaction for when metals react with water?

Answer 12

Question 13

which group 2 element does not react with water?

Answer 13

Be

Question 14

what is the general equation for the reaction of metals with dilute HCl?

Answer 14

Question 15

What is the general equation for the reaction of metals with dilute H2SO4?

Answer 15

Question 16

which two group 2 elements are insoluble?

Answer 16

SrSO4 and BaSO4

Question 17

what is produced when an oxide/hydroxide reacts with dilute HCl?

Answer 17

chloride + water

Question 18

what is produced when an oxide/hydroxide reacts with dilute sulfuric acid?

Answer 18

sulfate + water

Question 19

all group 2 carbonates are soluble/insoluble except….

Answer 19

insoluble except BeCO3

Question 20

carbonate + dilute HCl = ?

Answer 20

chloride + water + carbon dioxide

Question 21

carbonate + dilute H2SO4 = ?

Answer 21

sulfate + water + carbon dioxide

Question 22

what is limestone?

Answer 22

CaCO3 (calcium carbonate)

Question 23

what is quicklime?

Answer 23

CaO (calcium oxide) - formed by the thermal decomposition of calcium carbonate

Question 24

what is slaked lime ?

Answer 24

Ca(OH)2 - formed when water is added to quicklime

Question 25

what happens to the volatility of group 7 elements going down the group?

Answer 25

it decreases as boiling point increases

Question 26

what happens to the thermal stability of hydrogen halides going down the group?

Answer 26

it decreases as their hydrogen-halide bonds become weaker due to the increased atomic radius of the halogens

Question 27

what happens to the reducing power of halide ions going down the group?

Answer 27

it increases as the outermost electrons are held less tightly to the positively charged nucleus as the ionic radii increases

Question 28

how do you test for halides?

Answer 28

dissolve the solution in nitric acid and then add silver nitrate solution dropwise

Question 29

what colour ppt does AgCl form?

Answer 29

white

Question 30

what colour ppt does AgBr form?

Answer 30

cream

Question 31

what colour ppt does AgI form?

Answer 31

yellow

Question 32

what is added after the silver nitrate solution and why?

Answer 32

dilute/concentrated ammonia as the ppt could look very similar in colour

Question 33

what is the unknown halide if it dissolves in dilute ammonia?

Answer 33

chloride

Question 34

what is the unknown halide if it doesn't dissolve in dilute ammonia but it does in concentrated ammonia?

Answer 34

bromide

Question 35

what is the unknown halide if it doesn't dissolve in dilute ammonia or concentrated ammonia?

Answer 35

iodide

Question 36

what is the general reaction of halide ions with conc sulfuric acid

Answer 36

Question 37

how is HCl gas produced?

Answer 37

conc H2SO4 is added to sodium chloride crystals

Question 38

what are the reactions of Br- when reacted with conc H2SO4?

Answer 38

Question 39

what are the reactions of I- when reacted with conc H2SO4?

Answer 39

Question 40

what is the reaction of chlorine in cold alkali?

Answer 40

Question 41

what is the reaction of chlorine in hot alkali?

Answer 41