化学反应N2+3H2===2NH3的能量变化如右图所示,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-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 |
化学反应N2+3H2===2NH3的能量变化如右图所示,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-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 |