Chemistry 0620 · IGCSE · Rate of reaction

Rate of reaction — practice question

The consequences of a change in conditions on a chemical reaction are given below. 1 The total number of collisions per minute rose. 2 The number of effective collisions per minute rose. 3 The average energy of the particles rose. Which change in conditions led to all of these effects?

  • Aaddition of a catalyst
  • Bincreasing the concentration of a solution of a reactant
  • Cincreasing the surface area of a solid reactant
  • Dincreasing the temperature

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