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Ammonia can be produced from the reaction of hydrogen with nitrogen - Edexcel - GCSE Chemistry Combined Science - Question 5 - 2023 - Paper 2
Question 5
Ammonia can be produced from the reaction of hydrogen with nitrogen. (a) What is the percentage by mass of nitrogen in ammonia, NH₃? (relative atomic masses: H = ... show full transcript
Worked Solution & Example Answer:Ammonia can be produced from the reaction of hydrogen with nitrogen - Edexcel - GCSE Chemistry Combined Science - Question 5 - 2023 - Paper 2
Step 1
Which arrow represents the activation energy for the reaction?
Answer
Identifying Activation Energy in Reaction Profile
In the exothermic reaction profile shown in Figure 8, the activation energy is represented by the energy barrier that must be overcome for the reaction to proceed. This is illustrated as the distance from the energy level of the reactants (at point S) to the peak of the curve (at point Q).
Therefore, the correct answer is B arrow Q.