A Level H2 Chemistry 2021 Paper 3 Answers |top| Jun 2026

ΔG° = ΔH° – TΔS° = (–57.2 × 10³ J mol⁻¹) – (298 K × –175.8 J K⁻¹ mol⁻¹) = –57,200 + 52,388.4 = –4,811.6 J mol⁻¹ ≈ –4.81 kJ mol⁻¹ (2 marks – correct substitution & calculation)

: Many candidates reported that the mid-exam invigilator announcements regarding the error were highly disruptive to their concentration and time management . Key Content & Solutions Highlights A Level H2 Chemistry 2021 Paper 3 Answers

Using spectroscopic data and chemical tests to deduce unknown compounds. Key Highlights and Answer Walkthroughs ΔG° = ΔH° – TΔS° = (–57