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 statzvr k;set0 ,0gfqy3 cd8d*r :eu5q /nyements is 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 enthalprv(ghi5-a r nlmuw-:;d8 4d9; rgfu(q lj2gkty of formation of a pure element in its standard state is zero; not for a compound2ldw4 :5fm-rh u9j gi(ar8nqldg;r- (vut; gk.
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