本题目来源于试卷: What Drives Chemical Reactions D.1 Measuring Enthalpy Changes，类别为 IB化学
[单选题]
The following diagram shows the enthal ue9zfn+k xobddz2305 py of th /ku*01i iii3 neh zyu(e reactants and products of a reaction involving gaseous covalent compounds. Which statement is co ehz*kiui13iu0i/y( nrrect?
A. The reactants have a higher total average bond enthalpy than the products
B. The products have a higher total average bond enthalpy than the reactants
C. The activation energy is the sum of the total bond enthalpies for the products and reactants
D. The activation energy is the difference between the total bond enthalpies for the products and reactants
参考答案: B
本题详细解析:
The products are at a lower energy level than t-/xn4xgs h qn;he reactants meaning that the total average bond enthalpy of formation of bonds in the pns4x nx/gq h;-roducts is greater than the total average bond enthalpy of breaking of bonds in the reactants.
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