Zinc granules are allowed to react with excess dilute hydrochloric acid. The volume of hydrogen produced is recorded at different times. These outcomes are displayed on the graph as experiment 1. The outcomes from a second experiment are also displayed on the graph as experiment 2. Which condition was changed in experiment 2?
- AThe concentration of the hydrochloric acid was decreased.
- BThe size of the zinc granules was decreased.
- CThe surface area of the zinc granules was increased.
- DThe temperature was increased.