A-LevelChemistryChemical energetics9701/12 · Oct/Nov 2022 · Q161 Mark
Use relevant enthalpy changes from the tables to answer this question. [Table 16.1: Reactions and ∆H/kJ mol⁻¹] [Table 16.2: Bond and bond enthalpy /kJ mol⁻¹] Which value can be calculated for the enthalpy change for the following reaction? 2C(g) + 6H(g) → C2H6(g)
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.
A-2822 kJ mol⁻¹
B-2122 kJ mol⁻¹
C-1998 kJ mol⁻¹
D-1772 kJ mol⁻¹
✓ Correct answer
A: -2822 kJ mol⁻¹
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Chemical energetics and see which topics are most likely to come up next.
Sign up free →