Boderlscens研究反应：H2(g)+I2(g) ⇌ 2HI(g) △H<0．温度T时，在两个体积均为1L的密闭容器中进行实验，测得气体混合物中碘化氢的物质的量分数ω(HI)与反应时间t的

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Boderlscens研究反应：H₂(g)+I₂(g) ⇌ 2HI(g) △H<0．温度T时，在两个体积均为1L的密闭容器中进行实验，测得气体混合物中碘化氢的物质的量分数ω(HI)与反应时间t的关系如下表：

研究发现上述反应中 v正=ka⋅w(H2)⋅W(I2),v逆=kb⋅w(HI) 其中 ka、kb 为常数。下列说法正确的是（）

A：温度为T时该反应的 $\frac{k_{a}}{k_{b}} = 64$

B：容器I中前20 min的平均速率v(HI)=0.0125mol.L^-1.min^-1

C：若起始时，向容器I中加入物质的量均为0.1 mol的H₂、I₂、HI，反应逆向进行

D：若两容器中 $k_{a 1} = k_{a 2}$ 且 $k_{b 1} = k_{b 2}$ 则x的值一定为1

上一题下一题 0.0难度选择题更新时间:2019-05-15 03:58:16

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A,D

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从对话后的方框中选择适当的选项补全对话
Ted: What's the best restaurant in town?
Kay: What kind of food do you like?
Ted: ____
Kay: Well, the French Deli is really good.
Ted: ____
Kay_: Yes, it's the most expensive restaurant in town. But it has the best service, too.
Ted:____
Kay: It's cheaper than the French Deli, but the food is kind of boring.
Ted: ____
Kay: Oh, that's a new place. It's the most popular restaurant in town.
Ted: Is the food good?
Kay: Yeah, if you like hot curry.
Ted:Yeah. I love it! Let' s go there.

A. How about the Curry House?
B. Hmn…And what is Nick's Diner like?
C. Oh, any kind of food is okay.
D. Is it expensive?

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