Chemistry 0620 · IGCSE · Rate of reaction

Rate of reaction — practice question

In Experiment 1, $1\,\text{g}$ of calcium carbonate is allowed to react with an excess of dilute hydrochloric acid, and the volume of gas given off each minute is measured. In Experiment 2, the same experiment is carried out again, but smaller pieces of calcium carbonate are used. All the other conditions remain unchanged. The findings from both experiments are presented in a table with time in s (0, 60, 120, 180, 240), volume of gas from Experiment 1 in $\text{cm}^3$ (0, 98, 172, 212, 220) and volume of gas from Experiment 2 in $\text{cm}^3$ (0, 157, 209, 220, 220). Which statement is correct for Experiment 2?

  • AThe rate of reaction is faster than in Experiment 1 and there is the same amount of product.
  • BThe rate of reaction is faster than in Experiment 1 and there is more product.
  • CThe rate of reaction is the same as in Experiment 1 and there is the same amount of product.
  • DThe rate of reaction is the same as in Experiment 1 and there is more product.

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