Chemistry 5070 · O Level · Rate of reaction

Rate of reaction — practice question

In three experiments, an equal mass of magnesium is allowed to react with the same volume of dilute sulfuric acid at room temperature. The magnesium is present in excess. experiment 1: Magnesium is used in large pieces. experiment 2: Magnesium is used in small pieces. experiment 3: Magnesium is used in large pieces, but the acid concentration is increased. Graphs showing the results are given. Which row is the correct one?

  • Aexperiment 1: W; experiment 2: X; experiment 3: Y
  • Bexperiment 1: X; experiment 2: Y; experiment 3: W
  • Cexperiment 1: Y; experiment 2: W; experiment 3: X
  • Dexperiment 1: Y; experiment 2: X; experiment 3: W

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