Figure 2 represents a reaction in the production of sulfuric acid - AQA - GCSE Chemistry - Question 3 - 2014 - Paper 1
Question 3
Figure 2 represents a reaction in the production of sulfuric acid.
Figure 2
Oxygen
Sulfur dioxide
Reactor
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Worked Solution & Example Answer:Figure 2 represents a reaction in the production of sulfuric acid - AQA - GCSE Chemistry - Question 3 - 2014 - Paper 1
Step 1
Complete and balance the equation for the reaction.
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Answer
The balanced equation for the reaction is:
ightleftharpoons 2 ext{SO}_3(g)$$
Step 2
State the effect of increasing the pressure on the rate of reaction.
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Answer
Increasing the pressure will increase the rate of reaction.
Step 3
Explain your answer in terms of particles.
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Answer
When pressure increases, the volume of the gas decreases, leading to particles being closer together. This results in a higher frequency of collisions between the gas particles, which increases the likelihood of successful reactions.
Step 4
Suggest and explain why shape B is more effective as a catalyst than shape A.
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Shape B has a greater surface area compared to shape A, allowing for more reactant particles to come into contact with the catalyst. This increased surface area facilitates more frequent collisions, accelerating the reaction rate.
Step 5
What is meant by the activation energy?
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Activation energy is the minimum amount of energy required for the reactants to undergo a chemical reaction and start the process.
Step 6
Explain why potassium would not be suitable to react with sulfuric acid.
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Potassium is a very reactive Group 1 alkali metal. Reacting with sulfuric acid would lead to violent reactions, producing hydrogen gas rapidly, which can be dangerous.
Step 7
Complete the equation for this reaction.
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Answer
The equation for the reaction is:
ightarrow ext{ZnSO}_4 + ext{H}_2$$
Step 8
State one way, other than using a catalyst, that the student could increase the rate of the reaction.
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The student could increase the concentration of sulfuric acid.
