本题目来源于试卷: What Drives Chemical Reactions D.2 Energy Cycles in Reactions，类别为 IB化学
[单选题]
Given the following infork h9ftnz wd2mo4bcl 4e,9 **phmatimjvcm ,hd2so*me k;4 s30lri2on:
C(s)+$O_2$(g)→$CO_2$(g); ΔH= -393.5kJ mol$^{-1}$
CO(g)+$\frac{1}{2}$$O_2$(g)→$CO_2$(g);ΔH= -283.0kJ mol$^{-1}$
The standard enthalpy of formation of carbon monoxide (CO) is:
A. +110.5kJ mol$^{-1}$
B. -676.5kJ mol$^{-1}$
C. +676.5kJ mol$^{-1}$
D. -110.5kJ mol$^{-1}$
参考答案: D
本题详细解析:
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