Ammonia is made by reacting nitrogen with hydrogen - Edexcel - GCSE Chemistry Combined Science - Question 3 - 2021 - Paper 1
Question 3
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 Combined Science - Question 3 - 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 is obtained from air and Nitrogen is obtained from natural gas.
Step 2
In a dynamic equilibrium, two reactions occur at the same time.
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Answer
These are the forward reaction and the backward reaction.
Step 3
The rates of the two reactions are ____________.
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Answer
The rates of the two reactions are equal.
Step 4
Calculate the value of 200 atmospheres in Pascals.
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Answer
To convert atmospheres to Pascals, use the following formula:
200extatmimes101325extPa/atm=20265000extPa
Step 5
Complete the table showing the number of hydrogen molecules.
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Answer
Before reaction: 6
At equilibrium: 2
Change in number of molecules: -4
Step 6
Complete the equation for this reaction.
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