Get premium membership and access revision papers with marking schemes, video lessons and live classes.

Processing. Please wait.

The curves below represent the change in mass when equal masses of powdered zinc and zinc granules were reacted with excess 2M hydrochloric acid. Study them and answer the question below.

Which curve represents the reaction with zinc granules? Explain your answer.

Answer Text:
- Curve X represents zinc granules. This is because the granules have small surface area hence reacts slowly. The rate of change in mass therefore will be slow.