O-LevelChemistryStoichiometry5070/11 · May/June 2021 · Q101 Mark
A chemist wants to make calcium nitrate. They start with 8.00 g of pure calcium oxide and an excess of dilute nitric acid. They produce 12.65 g of pure, dry anhydrous calcium nitrate crystals. What is the percentage yield of calcium nitrate? [relative atomic masses, Aᵣ: Ca, 40; N, 14; H, 1; O, 16]
A54.0
B63.2
C67.1
D86.8
✓ Correct answer
A: 54.0
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 →