Chemistry 0620 · IGCSE · Rate of reaction

Rate of reaction — practice question

A student was carrying out an investigation into the reaction of marble chips with dilute hydrochloric acid. Which changes would decrease the rate of reaction?

  • Atemperature of acid: decrease; concentration of acid: decrease; surface area of marble chips: decrease
  • Btemperature of acid: decrease; concentration of acid: decrease; surface area of marble chips: increase
  • Ctemperature of acid: increase; concentration of acid: decrease; surface area of marble chips: decrease
  • Dtemperature of acid: increase; concentration of acid: increase; surface area of marble chips: increase

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