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In trials, the reaction is carried out with and without a catalyst in the sealed container - VCE - SSCE Chemistry - Question 11 - 2012 - Paper 1
Question 11
In trials, the reaction is carried out with and without a catalyst in the sealed container. All other conditions are unchanged. The change in hydrogen concentration ... show full transcript
Worked Solution & Example Answer:In trials, the reaction is carried out with and without a catalyst in the sealed container - VCE - SSCE Chemistry - Question 11 - 2012 - Paper 1
Step 1
Identify the correct graph for the uncatalysed and catalysed reactions.
Answer
In the presence of a catalyst, the reaction rate increases, allowing the concentration of hydrogen to reach its maximum more quickly compared to the uncatalysed reaction. This is portrayed in graph D, where the concentration of H₂ rises sharply due to the catalyst, leading to a quicker equilibrium compared to the un-catalysed reaction shown as a gentler slope.