A fixed volume of hydrochloric acid is reacted with excess magnesium ribbon, and the volume of gas released is recorded as time passes. The outcomes of two separate experiments are shown. Which statement accounts for the differences in the results from the two experiments?
- AReaction 1 uses a catalyst.
- BThe acid used is twice as concentrated in reaction 1.
- CThe magnesium ribbon is in smaller pieces in reaction 2.
- DThe temperature is higher in reaction 2.