0654.C6.2.02 — State that a catalyst increases the rate of a 6 State that a catalyst decreases the activation reaction and is unchanged at the end of a ene: past paper questions
Real questions on 0654.c6.2.02 — state that a catalyst increases the rate of a 6 state that a catalyst decreases the activation reaction and is unchanged at the end of a ene
The newest 5 of 5 written questions. Open one to see it on the real paper.
- 0654/02 · Specimen 2025 · Q19[1]
Which row describes and explains what happens to the rate of a reaction when a change in the reaction conditions is made?
See it on the paper → - 0654/42 · February/March 2025 · Q6b(i)[1]
State which student’s reaction is the fastest. student (i)
See it on the paper → - 0654/42 · February/March 2025 · Q6b(ii)[1]
Each student had 1.0 g of different sized pieces of magnesium. State which student had the pieces of magnesium with the smallest surface area. student
See it on the paper → - 0654/21 · October/November 2019 · Q26[1]
Which catalyst is used?
See it on the paper → - 0654/21 · May/June 2019 · Q25[1]
Which reaction requires a catalyst?
See it on the paper →
What examiners said
Almost all candidates identified student 3 as the correct answer.
— Examiner report, February/March 2025, 0654/42 Q6(b)(i) (Cambridge)
A number of candidates confused the effect of surface area on the rate of reaction and gave student 3 instead of student 4.
— Examiner report, February/March 2025, 0654/42 Q6(b)(ii) (Cambridge)
Candidates chose the incorrect C more often than the correct answer, B. They are required to know the reactions involved in the Contact process, including the essential condition of the use of a vanadium oxide catalyst in the oxidation of sulfur dioxide to sulfur trioxide.
— Examiner report, May/June 2019, 0654/21 Q25 (Cambridge)
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