題目列表(包括答案和解析)
化學反應N2+3H2===2NH3的能量變化如右圖所示,該反應的熱化學方程式是
A.N2(g)+3H2(g)===2NH3(l) ΔH=2(a-b-c)kJ·mol-
B.N2(g)+3H2(g)===2NH3(g) ΔH=2(b-a)kJ·mol-1
C. 1/2 N2 (g)+3/2H2(g)===NH3(l) ΔH=(b+c-a)kJ·mol-1
D. 1/2 N2(g)+3/2H2(g)===NH3(g) ΔH=(a+b)kJ·mol-1
下列反應中符合圖象的是
A.N2(g)+3H2(g) 2NH3(g) ΔH<0
B.2SO3( g) 2SO2(g)+O2(g) ΔH>0
C.4NH3(g)+5O2(g) 4NO(g)+6H2O(g) ΔH<0
D.H2(g)+CO(g) C(s)+H2O(g) ΔH>0
化學反應N2+3H2=2NH3的能量變化如圖所示,E是正值,該反應的熱化學方程式是( )
A.N2(g)+3H2(g)=2NH3(1); △H=2(a-b-c)kJ·mol-1 |
B.N2(g)+3H2(g)=2NH3(g);△H=2(b-a)kJ·mol-1 |
C.N2(g)+H2(g)=NH3(1);△H=(b+c-a)kJ·mol-1 |
D.N2(g)+H2(g)=NH3(g); △H=(a+b)kJ·mol |
現(xiàn)有下列兩個圖象:
下列反應中符合上述圖象的是( )
A.N2(g)+3H2(g) 2NH3(g) ΔH<0
B.2SO3(g) 2SO2(g)+O2(g) ΔH>0
C.4NH3(g)+5O2(g) 4NO(g)+6H2O(g) ΔH<0
D.H2(g)+CO(g) C(s)+H2O(g) ΔH>0
化學反應N2+3H2 = 2NH3的能量變化如下圖所示,該反應的熱化學方程式是
A、N2(g)+3H2(g) = 2NH3(l) ⊿H = 2(a—b—c)kJ/mol
B、N2(g)+3H2(g) = 2NH3(g) ⊿H = 2(b—a)kJ/mol
C、N2(g)+H2(g) = NH3(l) ⊿H = (b+c—a)kJ/mol
D、N2(g)+ H2(g) =NH3(g) ⊿H = (a+b)kJ/mol [來源:Z.xx.k.Com][來源:ZXXK]
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