Chemistry 0620 · IGCSE · Rate of reaction

Rate of reaction — practice question

Dilute acid R and dilute acid S have identical concentrations. Equal volumes of each dilute acid are reacted separately with the same mass of magnesium ribbon. Both reactions are done at room temperature and pressure. The volume of hydrogen produced is measured. A graph showing the results is given. Which statement about the reactions is correct?

  • AAcid S reacts faster than acid R.
  • BThe final volume of hydrogen produced in each reaction is different.
  • CAcid R is a stronger acid than acid S.
  • DAcid S is a stronger acid than acid R.

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