单项选择题
在下列平衡表达式K1、K2、K3的关系是:()N2(g)+3H2(g)==2NH3(g)K11/2N2(g)+3/2H2(g)==NH3(g)K21/3N2(g)+H2(g)==1/2NH3(g)K3
A.K1=K2=K3B.K1=2K2=3K3C.K1=2K2=K3D.K1=K22=K33
A.1.65B.0.40C.2.49D.0.61
A.AB.BC.CD.D