题目内容

下列反应中，ΔrSmΘ>0 的是

A. CO(g)＋Cl2(g)→COCl2(g)
B. N2(g)＋O2(g)→2 NO(g)
C. NH4HS(s)→NH3(g)＋H2S(g)
D. 2 HBr(g)→H2(g)＋Br2(l)

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A. CO2(g)＋CaO(s)→CaCO3(s)
B. 1/2H2(g)＋1/2I2(g)→HI(g)
C. H2(g)＋Cl2(g)→2 HCl(g)
D. H2(g)＋ 1/2O2(g)→H2O(g)

A. ΔrHmΘ
B. ΔrHmΘ－2.48 kJ·mol－1
C. ΔrHmΘ＋2.48 kJ·mol－1
D. －ΔrHmΘ

A. H
B. Q
C. ΔH
D. ΔU

A. 2 SO3(g)=2 SO2(g)＋O2(g)
B. 2 NH3(g)=3 H2(g)＋N2(g)
CO2(g)= C(s)＋O2(g)
D. CaSO4·2 H2O(s)＝CaSO4(s)＋2 H2O(l)