← Back to full paperPrevious questionNext question

Question 25

From Chemistry HL Paper 1A (May 2025, TZ2)

Grade your answerAnswer this question in practice mode and submit it for feedback.Practice under timed constraintsOpen the paper flow with timed full-exam navigation.
View source PDF page 10
  1. Which changes increase the rate of the reaction?
    2H2_2O2_2 (aq) → 2H2_2O(l) + O2_2 (g)
    I. Introducing a catalyst
    II. Increasing concentration of H2_2O2_2 (aq)
    III. Increasing pressure