Chemistry In Industry

Question 0

For haber process where do u get nitrogen from

Answer 0

Frozen air (liquid air)

Question 1

Haber process makes what from what

Answer 1

Ammonia from nitrogen and hydrogen

Question 2

For haber process where do u get hydrogen

Answer 2

Natural gas

Question 3

For haber process state 3 conditions

Answer 3

450•c
200atm
Iron catalyst

Question 4

For haber process how is ammonia separated from unreacted nitrogen and hydrogen

Answer 4

Cooled. Ammonia liquifies first

Question 5

Uses of ammonia (5)

Answer 5

Making
Fertilisers
Explosives
Nitric acid
Nylon
Also used as fertiliser alone

Question 6

Making nitric acid

Answer 6

4NH3 + 5O2 ———> 4NO + 6H2O
Platinum
4NO + 2H2O + 3O2 ——–> 4HNO3

Question 7

Making fertilisers

Answer 7

Hydrochloric acid + ammonia ---> ammonium chloride
HCl + NH3 -----> NH4Cl
Neutralisation
Or use nitric acid (NH4NO3)
Or use sulphuric acid ((NH4)2SO4)

Question 8

How to obtain hydrogen

Answer 8

Natural gas and steam

Methane + water —-> hydrogen + carbon monoxide

Question 9

How to obtain nitrogen

Answer 9

Fractional distillation of frozen air

Question 10

Things u need to extract aluminium

Answer 10

Bauxite Al2O3

Cryolite Na3AlF6

Question 11

What process extracts aluminium

Answer 11

Electrolysis

Question 12

For extracting aluminium the anode is where and made of what

Answer 12

Sticks down, graphite

Question 13

For extracting aluminium the cathode is where and is made of what

Answer 13

Round the edges, graphite

Question 14

For extracting aluminium what happens at the anode

Answer 14

2O2- —–> O2 + 4e-

Question 15

For extracting aluminium what’s happens at the cathode

Answer 15

Al3+ +3e- —-> Al

Question 16

For extracting aluminium why does the anodes/cathodes erode away

Answer 16

C + O2 —> CO2

Question 17

Uses of Al

Answer 17

Saucepans
Pylon cables
Aircraft

Question 18

How do u separate brine

Answer 18

Electrolysis

Question 19

For electrolysis of brine what happens at the anode

Answer 19

2Cl- —-> Cl2 + 2e-

Question 20

For electrolysis of brine what happens at the cathode

Answer 20

H+ + 2e- —–> H2

Question 21

For electrolysis of brine what is left in solution

Answer 21

NaOH

Question 22

Uses of NaOH

Answer 22

Soap
Bleach
Paper

Question 23

Test for NaOH

Answer 23

Litmus goes purple

Question 24

Test for Cl2 gas

Answer 24

Bleaches damp red litmus

Question 25

Test for H2

Answer 25

Lot splint squeaky pop

Question 26

Uses of Cl2

Answer 26

Sterilising water

Bleach

Question 27

Uses of H2

Answer 27

Fuel

Margarine

Question 28

What do u put into the blast furnace

Answer 28

Haemotite - Fe2O3
Coke - C
Limestone - CaCO3

Question 29

First 2 reactions that take place in the blast furnace in order

Answer 29

C + O2 —> CO2

CO2 + C —> 2CO

Question 30

Third reaction that take place in the blast furnace in order

Answer 30

Fe2O3 + 3CO —> 2Fe + 3CO2

Question 31

Final 2 reactions that take place in the blast furnace in order

Answer 31

CaCO3 —–> CaO + CO2

CaO + SiO2 —-> CaSiO3 (slag) (neutralisation)

Question 32

3 products of blast furnace

Answer 32

CO2 waste gas used to heat furnace
Molten slag used to make concrete
Molten iron used to make steel by adding O2

Question 33

Contact process first equation

Answer 33

S + O2 —–> SO2
Blue flame
Exo

Question 34

Contact process second equation

Answer 34

2SO2 + O2 2SO3
Vanadium (5) oxide (V2O5)
450•c
DONT ADD WATER CAUSE WILL RELEASE ACIDIC SPRAY

Question 35

Contact process third equation

Answer 35

SO3 + H2SO4 —> H2S2O7

Oleum

Question 36

Contact process fourth equation

Answer 36

H2S2O7 + H2O —> 2H2SO4

Question 37

Uses of H2SO4

Answer 37

Detergents
Fertilisers
Paint