Ammonia is made by reacting nitrogen with hydrogen - Edexcel - GCSE Chemistry - Question 5 - 2021 - Paper 1
Question 5
Ammonia is made by reacting nitrogen with hydrogen.
(a) The nitrogen and hydrogen are obtained from raw materials.
Draw one straight line from each gas to the raw ... show full transcript
Worked Solution & Example Answer:Ammonia is made by reacting nitrogen with hydrogen - Edexcel - GCSE Chemistry - Question 5 - 2021 - Paper 1
Step 1
Draw one straight line from each gas to the raw material it is obtained from.
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Answer
Hydrogen → Natural gas
Nitrogen → Air
Step 2
Complete the sentences about dynamic equilibrium.
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Answer
The forward reaction and the backward reaction.
The rates of the two reactions are equal.
Step 3
Calculate the value of 200 atmospheres in Pascals.
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Answer
To convert atmospheres to Pascals, use the conversion factor:
200extatmimes101325extPa/atm=20265000extPa
Therefore, pressure = 20265000 Pa.
Step 4
Complete the table showing the number of hydrogen molecules.
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Answer
number of molecules before reaction
number of molecules at equilibrium
change in number of molecules
nitrogen
4
2
hydrogen
4
2
ammonia
0
4
Step 5
Complete the equation for this reaction.
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