[填空题]
Consider the formationyq*u43l+qt 9net2b zm of wate ha6t0.8 c;ych:rpiapr:
$H_2$(g)+$\frac{1}{2}O_2$(g)→$H_2O$(l)
1.Using section 11 (Section 12- 2025 Syllabus) of the data booklet, calculate the enthalpy change for this reaction.
ΔH =- kJ mol$^{-1}$
2.1.Compare the theoretical value of enthalpy of formation of water found in section 12 (Section 13- 2025 Syllabus) of the data booklet to your answer in part (a). Suggest two reasons why they differ.
2.2.State the enthalpy change required to make your answer in part (a) more accurate.
Important note: The section numbers mentioned in the video solution are specific to the 2024 syllabus.
You can refer to the question stem to find the section numbers for the 2025 syllabus.
