助剂 | 的转化率/% | 各产物的物质的量分数/% | ||
其他 | ||||
42.5 | 35.9 | 39.6 | 24.5 | |
27.2 | 75.6 | 22.8 | 1.6 | |
9.8 | 80.7 | 12.5 | 6.8 |
A.第i步反应的活化能比第ii步的低 |
B.加氢合成低碳烯烃时还有生成 |
C.添加助剂时单位时间内乙烯的产量最高 |
D.使加氢合成低碳烯烃的减小 |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2