Chemistry · May / June 2024 · Paper 12 · Question 10

The equation for the reaction between ammonium chloride and calcium hydroxide is shown. 2NH₄Cl + Ca(OH)₂ → 2NH₃ + CaCl₂ + 2H₂O 10.7 g of ammonium chloride and 14.8 g of calcium hydroxide are mixed and warmed. 10.0 g of calcium chloride is obtained from the reaction. What is the percentage yield of calcium chloride? [Mᵣ: NH₄Cl, 53.5; Ca(OH)₂, 74; CaCl₂, 111]

1. A39.2%
2. B45.0%
3. C67.6%
4. D90.1%

As printed in the paper