A-LevelChemistryChemical energeticsOct/Nov 2021Paper 1 Q91 Mark
The equation for the formation of ammonium chloride is shown. NH3(g) + HCl(g) ⇌ NH4Cl(s) ΔH = −314 kJ mol⁻¹ Which diagram shows the correctly labelled reaction pathway diagram for the decomposition of ammonium chloride?
A[Reaction pathway diagram A]
B[Reaction pathway diagram B]
C[Reaction pathway diagram C]
D[Reaction pathway diagram D]
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of chemical energetics within the Chemistrysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🔒
Unlock the Examiner's Answer
Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep