A、(H<sub>1sub>-H<sub>2sub>)ρg B、H<sub>1sub>ρg C、H<sub>2sub>ρg D、(H<sub>1sub>+H<sub>2sub>)ρg
A、(H<sub>1sub>-H<sub>2sub>)ρg B、H<sub>1sub>ρg C、H<sub>2sub>ρg D、(H<sub>1sub>+H<sub>2sub>)ρg
A、△Hθ<sub>1sub>=△Hθ<sub>2sub> B、△Hθ<sub>1sub>=2△Hθ<sub>2sub> C、2△Hθ<sub>1sub>=△Hθ<sub>2sub> D、△Hθ<sub>1sub>与△Hθ<sub>2sub>无关
A、P=g<sub>4sub>Sl<sub>hsub>1501; B、P=g<sub>5sub>Sl<sub>hsub>1501; C、P=g<sub>1sub>Sl<sub>hsub>1501; D、P=g<sub>7sub>SI<sub>hsub>1501;
A、P=g<sub>4sub>•S•L<sub>hsub> B、P=g<sub>5sub>•S•L<sub>hsub> C、P=g<sub>6sub>•S•L<sub>hsub> D、P=g<sub>1sub>•S•L<sub>hsub>
A、Mg(s)+1/2O<sub>2sub>(g)=MgO(s) -Δ<sub>rsub>HØm(1) B、2Mg(s)+O<sub>2sub>(g)=2MgO(s) -Δ<sub>rsub>HØm(2) C、Mg(g)+1/2O<sub>2sub>(g)=MgO(s) -Δ<sub>rsub>HØm(3) D、Mg2+(g)+O<sub>2sub>(g)=MgO(s) -Δ<sub>rsub>HØm(4)
A、H<sub>2sub>O的标准生成热Δ<sub>fsub>H<sub>msub>θ B、H<sub>2sub>(g)的标准燃烧热ΔcHmθ(H<sub>2sub>,g) C、H<sub>2sub>O(l)的标准生成热Δ<sub>fsub>H<sub>msub>θ(H<sub>2sub>O,l) D、氢氧电池可逆热效应 E、以上均不对