A.N2(g)+3H2(g) = 2NH3kJ?mol-1B.N2(g)+3H2(g) = 2NH3kJ?mol-1 查看更多

 

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(abc)kJ·mol   

B.N2(g)+3H2(g)===2NH3(g)  ΔH=2(ba)kJ·mol1

C. 1/2 N2 (g)+3/2H2(g)===NH3(l)    ΔH=(bca)kJ·mol1

D. 1/2 N2(g)+3/2H2(g)===NH3(g)   ΔH=(ab)kJ·mol1

 

查看答案和解析>>

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

 

查看答案和解析>>

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

查看答案和解析>>

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

 

查看答案和解析>>

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]

 

查看答案和解析>>


同步練習冊答案