化学反应N2+3H2=2NH3的能量变化如图所示,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 |
B.N2(g)+3H2(g)═2NH3(g)△H=2(b-a)kJ/mol |
C.1/2N2(g)+ 3/2H2(g)═NH3(l) △H=(b+c-a)kJ/mol |
D.1/2N2(g)+ 3/2H2(g)═NH3(g)△H=(a+b)kJ/mol |
化学反应N2+3H2=2NH3的能量变化如图所示,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 |
B.N2(g)+3H2(g)═2NH3(g)△H=2(b-a)kJ/mol |
C.1/2N2(g)+ 3/2H2(g)═NH3(l) △H=(b+c-a)kJ/mol |
D.1/2N2(g)+ 3/2H2(g)═NH3(g)△H=(a+b)kJ/mol |