3 (a) Complete and balance the equation for the reaction - AQA - GCSE Chemistry - Question 3 - 2014 - Paper 1
Question 3
3 (a) Complete and balance the equation for the reaction.
SO₂(g) + O₂(g) ⇌ SO₃(g)
3 (b) The conditions can affect the rate of the reaction.
3 (b) (i) The pressure... show full transcript
Worked Solution & Example Answer:3 (a) Complete and balance the equation for the reaction - 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 is:
SO2(g)+O2(g)⇌SO3(g)
Step 2
State the effect of increasing the pressure on the rate of reaction.
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Answer
The rate of the reaction increases.
Step 3
Explain your answer in terms of particles.
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Answer
Increasing the pressure causes the gases to occupy a smaller volume, thus particles are closer together. This leads to more frequent collisions, increasing 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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Answer
Shape B has a greater surface area compared to shape A. A larger surface area allows for more collisions between the catalyst and reactant particles, resulting in a faster reaction.
Step 5
What is meant by the activation energy?
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Activation energy is the minimum amount of energy that particles must have to facilitate a chemical reaction or to overcome the energy barrier for the reaction to proceed.
Step 6
Explain why potassium would not be a suitable metal to react with sulfuric acid.
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Potassium is too reactive, which can lead to dangerous or violent reactions with sulfuric acid, making it unsuitable for such reactions.
Step 7
Complete the equation for this reaction.
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Answer
The balanced equation is:
Zn+H2SO4→ZnSO4+H2
Step 8
State one way, other than using a catalyst, that the student could increase the rate of the reaction.
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Answer
One way to increase the rate of the reaction is to increase the concentration of sulfuric acid.
