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Haber and Contact Process

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GCSE Chemistry Quiz on Haber and Contact Process, created by lisawinkler10 on 14/05/2015.
lisawinkler10
Quiz by lisawinkler10, updated more than 1 year ago
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Created by lisawinkler10 over 9 years ago
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Resource summary

Question 1

Question
The following questions are on the Haber process. What is the process used for?
Answer
  • The manufacture of Sulfuric Acid
  • The manufacture of Ammonia
  • The manufacture of Nitrogen
  • Cracking hydrocarbons

Question 2

Question
Tick what Ammonia is made of
Answer
  • Nitrogen
  • Hydrogen
  • Carbon
  • Oxygen

Question 3

Question
Which two could hydrogen be obtained from?
Answer
  • Natural gas
  • Cracking of hydrocarbons
  • Burning sulfur in air
  • Electrolysis of water

Question 4

Question
The nitrogen is obtained from air
Answer
  • True
  • False

Question 5

Question
The reaction for the Haber Process is: N2 + 3 H2 ⇌ 2 NH3 (ΔH = −92.4 kJ·mol−1)
Answer
  • True
  • False

Question 6

Question
The equilibrium position is shifted to the right hand side for a high yield by...
Answer
  • using a low temperature and a high pressure
  • using a high temperature and a high pressure
  • using a high temperature and a low pressure
  • using a low temperature and a low pressure

Question 7

Question
What is the pressure used?
Answer
  • 2 atmospheres
  • 4 atmospheres
  • 50 atmospheres
  • 200 atmospheres

Question 8

Question
What reasons make a high pressure very expensive?
Answer
  • A lot of energy needed to compress the gases
  • Thick-walled pipes and reaction containers are needed
  • Dangerous so requires pressure safety equipment
  • Releases fossil fuels

Question 9

Question
What temperature is used as a compromise between rate and yield?
Answer
  • 450℃
  • 200℃
  • 1000℃
  • 50℃

Question 10

Question
What is the most economical catalyst?
Answer
  • Iron
  • Sodium
  • Magnesium
  • Lead

Question 11

Question
Under the conditions, how much hydrogen and nitrogen is converted into ammonia?
Answer
  • 98%
  • 15%
  • 60%
  • 100%

Question 12

Question
What happens to the unreacted nitrogen and hydrogen?
Answer
  • Passed again into the reaction chamber
  • Disposed of
  • Sent for analysis
  • Released into the environment to promote global warming

Question 13

Question
What happens to the ammonia?
Answer
  • It leaves the reaction vessel and is cooled, liquefied and tapped off.
  • It stays in the reaction vessel and is cooled, liquefied and tapped off.
  • It leaves the reaction vessel and is cooled, solidified and removed.
  • It stays in the reaction vessel and is cooled, solidified and tapped off.

Question 14

Question
What is ammonia used for?
Answer
  • Manufacture of fertilisers
  • Manufacture of nitric acid
  • Manufacture of nylon
  • Manufacture of steel

Question 15

Question
The following questions are on the Contact process. What is it used for?
Answer
  • Manufacture of sulfuric acid
  • Manufacture of ammonia
  • Manufacture of fertilisers
  • Manufacture of Copper Oxide

Question 16

Question
Stage 1 of the contact process is making sulfur dioxide: S(s)+O2(g)→SO2(g). How is this done?
Answer
  • By burning sulfur in air
  • By reacting it with oxygen
  • By absorbing it in oxygen
  • By diluting it with oxygen

Question 17

Question
Stage 2 of the contact process is making sulfur trioxide: 2SO2(g)+O2(g)⇌2SO3(g) ΔH=−196kJ/mol. How is this done?
Answer
  • Sulfur dioxide is reacted with oxygen
  • Sulfur dioxide is burnt in air
  • Sulfur dioxide is absorbed into oxygen
  • Sulfur dioxide is diluted with oxygen

Question 18

Question
It is called the contact process because in stage 2, the two gases react together in contact with a solid catalyst, Vanadium(V) Oxide
Answer
  • True
  • False

Question 19

Question
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℃
Answer
  • True
  • False

Question 20

Question
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?
Answer
  • 2 atmospheres
  • 200 atmospheres
  • 50 atmospheres
  • 1000 atmospheres

Question 21

Question
Stage 3 of the contact process is making oleum: H2SO4(l)+SO3(g)→H2S2O7(l). How is this done?
Answer
  • Sulfur trioxide is absorbed into concentrated sulfuric acid
  • Sulfur trioxide is burnt with concentrated sulfuric acid
  • Sulfur trioxide is dissolved into concentrated sulfuric acid
  • Sulfur trioxide is diluted with concentrated sulfuric acid

Question 22

Question
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?
Answer
  • Oleum is diluted with water
  • Oleum is is rinsed with water
  • Oleum is recycled into water
  • Oleum is neglected by his parents
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