下列叙述中,正确的是(    ) A.石油、煤、天然气、氢气都属于

下列叙述中,正确的是   

A.石油、煤、天然气、氢气都属于化石燃料

B.常温下,反应Cs)+CO2g)=2COg)不能自发进行,则该反应的ΔH<0

C.人们通常用标准燃烧热或热值来衡量燃料燃烧放出热量的大小,某物质的热值越高则其标准燃烧热越大

D.两个体积相同的容器中充入等量的NO2发生反应:2NO2gN2O4g ΔH0绝热容器中气体的颜色比恒温容器中颜色深

答案

D

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