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]
Which enthalpy changepi1g/zgcb ezhwj0o 3;d:x/0xh4sq l,2nr4eh c rp32zkir54zp annot be calculated directly from average bond enthalpy datarr kzipz 245p3?
A. $N_2$(g)+3$H_2$(g)→2$NH_3$(g)
B. $SO_2$(g)+$\frac{1}{2}$$O_2$(g)→$SO_3$(g)
C. $CH_2O$(g)+$O_2$(g)→$CO_2$(g)+$H_2O$(l)
D. $CH_4$(g)+$Cl_2$(g)→$CH_3Cl$(g)+$HCl$(g)
参考答案: C
本题详细解析:
Average bond enthalpies give data for species in the gaseous phase. In choice C, water is a liquid and so the enthalpy change for the condensation of water vapour would also be needed.
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