One mole samples of each of the solid carbonates of lead, calcium, barium and magnesium are reacted in turn with excess dilute sulfuric acid. Which sample of carbonate will release the greatest volume of carbon dioxide?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
✓ Correct answer
D: magnesium
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Stoichiometry and see which topics are most likely to come up next.
Sign up free →