Ammonia
Authored by Chun Siang Sim
Chemistry
10th Grade
Used 220+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In the Haber process for the manufacture of ammonia, which of the following statements are correct?
I) The catalyst used is a transition metal.
II) Unreacted nitrogen and hydrogen are circulated back into the system.
III) Both reactants are obtained from the fractional distillation of liquefied air.
IV) The reaction is never complete and yield achieved is only about
10 – 15%
I, II and III
I, II and IV
II, III and IV
All of the above
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which statement is not correct about the Haber process?
High pressure of 250 atm is used to increase yield.
Each hydrogen molecule reacts with three nitrogen molecules to form two molecules of ammonia.
A low temperature of 450 oC is used.
The reaction is reversible.
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Nitrogen and hydrogen reacts to form ammonia in the Haber process.
Which statement is correct?
A high yield of ammonia is favoured by high pressure.
A high yield of ammonia is favoured by high temperature.
A high yield of ammonia is favoured by adding catalyst.
The reaction between nitrogen and hydrogen is irreversible.
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The diagram shows the manufacture of ammonia using hydrogen and nitrogen in the presence of catalyst.
What are the processes P and Q and catalyst Y?
P: cracking ; Q: fractional distillation ; Y: iron
P: cracking ; Q: fractional distillation ; Y: nickel
P: fractional distillation ; Q: cracking ; Y: iron
P: combustion ; Q: cracking ; Y: nickel
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Arsine, AsH3, is a gas that behaves like ammonia.
Which ions would be produced when arsine dissolves in water?
AsH+ and H+
AsH3+ and OH−
AsH4+ and H+
AsH4+ and OH−
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Some farmers use fertiliser containing ammonium nitrate and calcium carbonate.
Why is this fertilizer useful?
It provides all the essential nutrients for plant growth.
They form a compound which is not washed away by rain water.
It provides nitrogen and carbon dioxide which are required for plant growth.
It provides nitrogen for plant growth and calcium carbonate to neutralise the excess acidity of the soil.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A high yield of ammonia is favoured in the Haber process by conditions of high pressure and low temperature. However, in practice a high temperature is employed because at low temperature,
ammonia decomposes back to its original reactant.
the activation energy is too low.
the catalyst is inactive.
the reaction is too slow.
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