Powdered magnesium carbonate is added to an excess of dilute hydrochloric acid. The total volume of gas given off is recorded with time. The results are displayed on a graph. The experiment is carried out again, but the concentration of the hydrochloric acid is doubled. All the other conditions remain unchanged. Which statements about the second experiment are correct?
- A1 and 2
- B1 and 3
- C2 and 3
- D2 only