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Flashcards in Chemistry In Industry Deck (38):
0

Haber process makes what from what

Ammonia from nitrogen and hydrogen

1

For haber process where do u get nitrogen from

Frozen air (liquid air)

2

For haber process where do u get hydrogen

Natural gas

3

For haber process state 3 conditions

450•c
200atm
Iron catalyst

4

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

Cooled. Ammonia liquifies first

5

Uses of ammonia (5)

Making
Fertilisers
Explosives
Nitric acid
Nylon
Also used as fertiliser alone

6

Making nitric acid

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

7

Making fertilisers

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

8

How to obtain hydrogen

Natural gas and steam
Methane + water ----> hydrogen + carbon monoxide

9

How to obtain nitrogen

Fractional distillation of frozen air

10

Things u need to extract aluminium

Bauxite Al2O3
Cryolite Na3AlF6

11

What process extracts aluminium

Electrolysis

12

For extracting aluminium the anode is where and made of what

Sticks down, graphite

13

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

Round the edges, graphite

14

For extracting aluminium what happens at the anode

2O2- -----> O2 + 4e-

15

For extracting aluminium what's happens at the cathode

Al3+ +3e- ----> Al

16

For extracting aluminium why does the anodes/cathodes erode away

C + O2 ---> CO2

17

Uses of Al

Saucepans
Pylon cables
Aircraft

18

How do u separate brine

Electrolysis

19

For electrolysis of brine what happens at the anode

2Cl- ----> Cl2 + 2e-

20

For electrolysis of brine what happens at the cathode

H+ + 2e- -----> H2

21

For electrolysis of brine what is left in solution

NaOH

22

Uses of NaOH

Soap
Bleach
Paper

23

Test for NaOH

Litmus goes purple

24

Test for Cl2 gas

Bleaches damp red litmus

25

Test for H2

Lot splint squeaky pop

26

Uses of Cl2

Sterilising water
Bleach

27

Uses of H2

Fuel
Margarine

28

What do u put into the blast furnace

Haemotite - Fe2O3
Coke - C
Limestone - CaCO3

29

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

C + O2 ---> CO2
CO2 + C ---> 2CO

30

Third reaction that take place in the blast furnace in order

Fe2O3 + 3CO ---> 2Fe + 3CO2

31

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

CaCO3 -----> CaO + CO2
CaO + SiO2 ----> CaSiO3 (slag) (neutralisation)

32

3 products of blast furnace

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

33

Contact process first equation

S + O2 -----> SO2
Blue flame
Exo

34

Contact process second equation

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

35

Contact process third equation

SO3 + H2SO4 ---> H2S2O7
Oleum

36

Contact process fourth equation

H2S2O7 + H2O ---> 2H2SO4

37

Uses of H2SO4

Detergents
Fertilisers
Paint