18.化学反应N2+3H2 = 2NH3的能量变化下图所示.该反应的热化学方程式是( ) A.N2(g)+3H2(g) 2NH3 kJ/mol B.N2(g)+3H2(g) 2NH3 kJ/mol C.N2(g)+H2(g) NH3 kJ/mol D.N2(g)+H2(g) NH3 kJ/mol 查看更多

 

题目列表(包括答案和解析)

化学反应N2+3H2  2NH3的能量变化如下图所示,该反应的热化学方程式是(   )

A.N2(g)+3H2(g) 2NH3(l) ⊿H =2(a—b—c)kJ·mol-1
B.N2(g)+3H2(g) 2NH3(g) ⊿H =2(b—a)kJ·mol-1
C.1/2N2(g)+3/2H2(g) NH3(l)⊿H = (b+c—a)kJ·mol-1
D.1/2N2(g)+3/2H2(g) NH3(g)⊿H = (a+b)kJ·mol-1

查看答案和解析>>

化学反应N23H2 2NH3的能量变化如下图所示,该反应的热化学方程式是( )

AN2(g)3H2(g) 2NH3(l) H 2(a—b—c)kJ·mol1

BN2(g)3H2(g) 2NH3(g) H 2(b—a)kJ·mol1

C1/2N2(g)3/2H2(g) NH3(l) H (bc—a)kJ·mol1

D1/2N2(g)3/2H2(g) NH3(g) H (ab)kJ·mol1

 

查看答案和解析>>

化学反应N2+3H2  2NH3的能量变化如下图所示,该反应的热化学方程式是(   )
A.N2(g)+3H2(g) 2NH3(l) ⊿H =2(a—b—c)kJ·mol-1
B.N2(g)+3H2(g) 2NH3(g) ⊿H =2(b—a)kJ·mol-1
C.1/2N2(g)+3/2H2(g) NH3(l)⊿H = (b+c—a)kJ·mol-1
D.1/2N2(g)+3/2H2(g) NH3(g)⊿H = (a+b)kJ·mol-1

查看答案和解析>>

化学反应N2+3H2===2NH3的能量变化如下图所示,该反应的热化学方程式是
[     ]
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
C.1/2N2(g)+3/2H2(g)===NH3(l) ΔH=(b+c-a)kJ/mol
D.1/2N2(g)+3/2H2(g)===NH3(g) ΔH=(a+b)kJ/mol

查看答案和解析>>

化学反应N2+3H2===2NH3的能量变化如下图所示,该反应的热化学方程式是
[     ]
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
C.1/2N2(g)+3/2H2(g)===NH3(l) ΔH=(b+c-a)kJ/mol
D.1/2N2(g)+3/2H2(g)===NH3(g) ΔH=(a+b)kJ/mol

查看答案和解析>>


同步练习册答案