题目
题目

CHM1051 MUM S2 2025 CHM1051 Practice Exam 2

单项选择题

Given the data: N2(g), Δf Ho = 0.00 kJ·mol–1, So = +191.5 J·mol–1·K–1H2(g), Δf Ho = 0.00 kJ·mol–1, So = +130.6 J·mol–1·K–1NH3(g), Δf Ho = -46.0 kJ·mol–1, So = +192.5 J·mol–1·K–1 calculate the standard free energy change, ΔGo, for the reaction: N2(g) + 3 H2(g) →  2 NH3(g)

选项
A.a. –82.0 kJ·mol–1
B.b. –32.9 kJ·mol–1
C.c. –7.4 kJ·mol–1
D.d. +13.1 kJ·mol–1
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思路分析
To tackle this thermodynamics problem, I’ll break down the data and compute the standard free energy of formation for each species at 298 K, then apply them to the reaction. First, note the given data: N2(g) with ΔfH° = 0.00 kJ·mol–1 and S° = 191.5 J·mol–1·K–1; H2(g) with ΔfH° = 0.00 kJ·mol–1 and S° =......Login to view full explanation

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