2730499
Descripción
Test por lisawinkler10, actualizado hace más de 1 año
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Creado por lisawinkler10
hace más de 9 años
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Pregunta 1
Pregunta
The following questions are on the Haber process. What is the process used for?
Respuesta
-
The manufacture of Sulfuric Acid
-
The manufacture of Ammonia
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The manufacture of Nitrogen
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Cracking hydrocarbons
Pregunta 2
Pregunta
Tick what Ammonia is made of
Respuesta
-
Nitrogen
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Hydrogen
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Carbon
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Oxygen
Pregunta 3
Pregunta
Which two could hydrogen be obtained from?
Respuesta
-
Natural gas
-
Cracking of hydrocarbons
-
Burning sulfur in air
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Electrolysis of water
Pregunta 4
Pregunta
The nitrogen is obtained from air
Respuesta
- True
- False
Pregunta 5
Pregunta
The reaction for the Haber Process is: N2 + 3 H2 ⇌ 2 NH3 (ΔH = −92.4 kJ·mol−1)
Respuesta
- True
- False
Pregunta 6
Pregunta
The equilibrium position is shifted to the right hand side for a high yield by...
Respuesta
-
using a low temperature and a high pressure
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using a high temperature and a high pressure
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using a high temperature and a low pressure
-
using a low temperature and a low pressure
Pregunta 7
Pregunta
What is the pressure used?
Respuesta
-
2 atmospheres
-
4 atmospheres
-
50 atmospheres
-
200 atmospheres
Pregunta 8
Pregunta
What reasons make a high pressure very expensive?
Respuesta
-
A lot of energy needed to compress the gases
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Thick-walled pipes and reaction containers are needed
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Dangerous so requires pressure safety equipment
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Releases fossil fuels
Pregunta 9
Pregunta
What temperature is used as a compromise between rate and yield?
Respuesta
-
450℃
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200℃
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1000℃
-
50℃
Pregunta 10
Pregunta
What is the most economical catalyst?
Respuesta
-
Iron
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Sodium
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Magnesium
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Lead
Pregunta 11
Pregunta
Under the conditions, how much hydrogen and nitrogen is converted into ammonia?
Respuesta
-
98%
-
15%
-
60%
-
100%
Pregunta 12
Pregunta
What happens to the unreacted nitrogen and hydrogen?
Respuesta
-
Passed again into the reaction chamber
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Disposed of
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Sent for analysis
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Released into the environment to promote global warming
Pregunta 13
Pregunta
What happens to the ammonia?
Respuesta
-
It leaves the reaction vessel and is cooled, liquefied and tapped off.
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It stays in the reaction vessel and is cooled, liquefied and tapped off.
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It leaves the reaction vessel and is cooled, solidified and removed.
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It stays in the reaction vessel and is cooled, solidified and tapped off.
Pregunta 14
Pregunta
What is ammonia used for?
Respuesta
-
Manufacture of fertilisers
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Manufacture of nitric acid
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Manufacture of nylon
-
Manufacture of steel
Pregunta 15
Pregunta
The following questions are on the Contact process. What is it used for?
Respuesta
-
Manufacture of sulfuric acid
-
Manufacture of ammonia
-
Manufacture of fertilisers
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Manufacture of Copper Oxide
Pregunta 16
Pregunta
Stage 1 of the contact process is making sulfur dioxide: S(s)+O2(g)→SO2(g). How is this done?
Respuesta
-
By burning sulfur in air
-
By reacting it with oxygen
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By absorbing it in oxygen
-
By diluting it with oxygen
Pregunta 17
Pregunta
Stage 2 of the contact process is making sulfur trioxide: 2SO2(g)+O2(g)⇌2SO3(g) ΔH=−196kJ/mol. How is this done?
Respuesta
-
Sulfur dioxide is reacted with oxygen
-
Sulfur dioxide is burnt in air
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Sulfur dioxide is absorbed into oxygen
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Sulfur dioxide is diluted with oxygen
Pregunta 18
Pregunta
It is called the contact process because in stage 2, the two gases react together in contact with a solid catalyst, Vanadium(V) Oxide
Respuesta
- True
- False
Pregunta 19
Pregunta
The forward reaction is exothermic so the yield would be increased by using a low temperature but due to rate of reaction, it is carried out at 450℃
Respuesta
- True
- False
Pregunta 20
Pregunta
There are fewer molecules on the right so the yield would increase with pressure, but as the yield is already 98%, what is the pressure used?
Respuesta
-
2 atmospheres
-
200 atmospheres
-
50 atmospheres
-
1000 atmospheres
Pregunta 21
Pregunta
Stage 3 of the contact process is making oleum: H2SO4(l)+SO3(g)→H2S2O7(l). How is this done?
Respuesta
-
Sulfur trioxide is absorbed into concentrated sulfuric acid
-
Sulfur trioxide is burnt with concentrated sulfuric acid
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Sulfur trioxide is dissolved into concentrated sulfuric acid
-
Sulfur trioxide is diluted with concentrated sulfuric acid
Pregunta 22
Pregunta
The next part of stage 3 makes a concentrated solution of sulfuric acid out of oleum: H2S2O7(l)+H2O(l)→2H2SO4(aq). How is this done?
Respuesta
-
Oleum is diluted with water
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Oleum is is rinsed with water
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Oleum is recycled into water
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Oleum is neglected by his parents
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