Chemistry 0620 · IGCSE · Rate of reaction

Rate of reaction — practice question

Chunks of limestone react with dilute hydrochloric acid as represented by the equation below. $\text{CaCO}_3 + 2\text{HCl} \rightarrow \text{CaCl}_2 + \text{H}_2\text{O} + \text{CO}_2$. Which alteration in the conditions would decrease the rate of reaction?

  • Aincrease the concentration of the acid
  • Bincrease the volume of the acid
  • Cincrease the size of the lumps of limestone
  • Dincrease the temperature

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