3A(g)+B(g)=2C(g)+2D(g), 3 1 2 2 ①v(A)=0.6mol•L-1•min-1; ②v(B)=0.45mol•L-1•min-1,则v(A)=0.45mol•L-1•min-1×3=1.35mol•L-1•min-1; ③v(C)=0.5mol•L-1•min-1,则v(A)=0.5mol•L-1•min-1×=0.75mol•L-1•min-1; ④v(D)=0.45mol•L-1•min-1,,则v(A)=0.45mol•L-1•min-1×=0.675mol•L-1•min-1; 显然②表示的该反应的反应速率最大, 故选D. |