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盖斯定律 · 历年高考化学真题与解析

本页汇总 高考真题检索 的「盖斯定律」高考化学真题共 2 道,覆盖 2010–2020 年,最常出题型为 单选题;含完整答案与解析。

2questions
Past questions included
2010–2020
Years covered
区分题为主
Overall difficulty
Single-choice
Most common question type
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Past Question List

2020 Beijing Gaokao Single choice Differentiating Question 12 2020_北京卷 (化学)

12. 依据图示关系,下列说法不正确的是

A. 石墨燃烧是放热反应
B. 1molC(石墨)和1molCO分别在足量O2中燃烧,全部转化为CO2,前者放热多
C. C(石墨)+$CO2(g)=2CO(g)$ Δ$H=$ΔH1-ΔH2
D. 化学反应的ΔH,只与反应体系的始态和终态有关,与反应途径无关
2010 Shandong Gaokao Single choice Differentiating Question 2 2010_山东卷 (化学)

2.(4分)(2010•山东)下列与化学反应能量变化相关的叙述正确的是(  )

A. 生成物总能量一定低于反应物总能量
B. 放热反应的反应速率总是大于吸热反应的反应速率
C. 应用盖斯定律,可计算某些难以直接测量的反应焓变
D. 同温同压下,H2(g)+Cl2(g)═2HCl(g)在光照和点燃条件下的△H不同

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