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]
Which reaction belowdq(61jk- 2qydegt7jjv 7rx;1n anrd5 is endothermic/: i4fb 7i3x yx hp;i+tfz(j3uiimv3a ?
A. 2$NO$(g)+$O_2${g}→2$NO_2$(g)
B. $CH_4$(g)+2$O_2$(g)→$CO_2$(g)+2$H_2O$(l)
C. 4$Al$(s)+3$O_2$(g)→2$Al_2O_3$(s)
D. $CaCO_3$(s)→$CaO$(s)+$CO_2$(g)
参考答案: D
本题详细解析:
D is a thermal decomposition reaction and so requires (+tg p39s./ yrm9kh4xll y bwe/gxd; qenergy from the surroundings through heating in order to take place. A, B, and C are alle+qb g9x4wl/ld yr/xg;(kh y.93m ps t combustion reactions and so exothermic.
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