題目列表(包括答案和解析)
化學(xué)反應(yīng)N2+3H2 = 2NH3的能量變化如題圖所示,該反應(yīng)的熱化學(xué)方程式是( )
A.N2(g)+3H2(g) = 2NH3(g) ;⊿H = 2(b—a)kJ·mol-1
B.N2(g)+3H2(g) = 2NH3(l);⊿H = 2(a—b—c)kJ·mol-1
C.N2(g)+H2(g) = NH3(l) ;⊿H = (b+c—a)kJ·mol-1
D.N2(g)+H2(g) =NH3(g) ;⊿H = (a+b)kJ·mol-1
化學(xué)反應(yīng)N2+3H2 = 2NH3的能量變化如題圖所示,該反應(yīng)的熱化學(xué)方程式是( )
A.N2(g)+3H2(g) = 2NH3(g) ;⊿H = 2(b—a)kJ·mol-1
B.N2(g)+3H2(g) = 2NH3(l);⊿H = 2(a—b—c)kJ·mol-1
C.N2(g)+H2(g) = NH3(l) ;⊿H = (b+c—a)kJ·mol-1
D.N2(g)+H2(g) =NH3(g) ;⊿H = (a+b)kJ·mol-1
(2分)化學(xué)反應(yīng)N2+3H2 = 2NH3的能量變化如圖所示,該反應(yīng)的熱化學(xué)方程式是:N2(g)+3H2(g) = 2NH3(l);⊿H = .
(2分)化學(xué)反應(yīng)N2+3H2= 2NH3的能量變化如圖所示,該反應(yīng)的熱化學(xué)方程式是:N2(g)+3H2(g) = 2NH3(l);⊿H = .
化學(xué)反應(yīng)N2+3H2=2NH3的能量變化如圖所示,該反應(yīng)的熱化學(xué)方程式是
A.N2(g)+3H2(g)=2NH3(l);ΔH=2(a-b-c) kJ·mol-1
B.N2(g)+3H2(g)=2NH3(g);ΔH=2(b-a) kJ·mol-1
C.N2(g)+H2(g)=NH3(l);ΔH=(b+c-a) kJ·mol-1
D.N2(g)+H2((g)=NH3(g);ΔH=(a+b) kJ·mol-1
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