What Drives Chemical Reactions D.2 Energy Cycles in Reactions (id: 8107b392c)

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 iban+u)8ylv/s 0zm3 l; gpu.o lpfxo)3 yxi im6.n+ rdzir4)yd4o9-ytv4t vz8nformation:
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


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