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 of the following s: ba n1+5zhgo -8+8tdcfxcnvy tatements is7v qca 0r,iaqg ie1+0p false?
A. Hess's law states that the total enthalpy change for a chemical reaction is independent of the route by which the reaction takes place
B. ΔH$_r^{\circ}$=∑[ΔH$_f^{\circ}$(products)]-∑[ΔH$_f^{\circ}$(reactants)]
C. The standard enthalpy of formation of $O_2$(g) is zero
D. The standard enthalpy of formation for a pure compound in its standard state is zero
参考答案: D
本题详细解析:
The standard enthalpy of formation ii9m e;mi7b1k:j tjv4of a pure element in its standard state is zero; not for a compoundmibie7k m: ;jti14v j9.
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