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]
If a reaction is endoh.u+mu0yg .1z r0d3mkek ly6wr jx24nthermis*-i 54tpk y-nbqakr9 nbcg :.c:
A. ΔH is negative and heat is absorbed
B. ΔH is positive and heat is absorbed
C. ΔH is positive and heat is emitted
D. ΔH is negative and heat is emitted
参考答案: B
本题详细解析:
If a chemical reactiek8(cjspg0+, xv kb )lon leads to an increase in enthalpy, the heat energy is absorbed sl( 0)ekckbjg,v 8px+from the surroundings.
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