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 enthalpy diagram 5c mr; ncor egwb+co0zh-/+;b,+zfez*;d 7e1f,nj4zefmol h below shows that:
A. The reactants are more stable than the products and ΔH is positive
B. The products are more stable than the reactants and ΔH is positive
C. The reactants are more stable than the products andΔH is negative
D. The products are more stable than the reactants and ΔH is negative
参考答案: A
本题详细解析:
The reactants are atfi l 5fq1i.t4nzg /:q38y bp1c3oe jed a lower energy level to the products and are therefore more stable. The products are at a higher energy level to the products meaning the enthalpy change icq:j/q4n eyie38 d3b1g z1of. f i5ltps positive (endothermic reaction).
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