单选题 适中0.65 引用1 组卷164
一定温度和压强下,在2 L的密闭容器中合成氨气:N2(g)+3H2(g)
2NH3(g) 。在反应过程中反应物和生成物的物质的量随时间的变化如图所示。下列说法不正确 的是:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/a3e06a57-bd02-4229-b130-c21171d84bd8.png?resizew=257)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/a3e06a57-bd02-4229-b130-c21171d84bd8.png?resizew=257)
A.0~10 min内,以NH3表示的平均反应速率为0.005 mol • L-1• min-1 |
B.10~20 min内,NH3浓度变化的原因可能是加入催化剂 |
C.该反应在20 min时达到化学平衡状态 |
D.N2的平衡转化率与H2平衡转化率相等 |
19-20高一下·广东佛山·期中
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一定条件下,在容积为2 L的恒温密闭容器中充入1 mol
(g)和2 mol H2,发生反应![](https://img.xkw.com/dksih/QBM/2021/6/23/2749267531333632/2750537729212416/STEM/370ba9964a29411aa266014ca21512e6.png?resizew=41)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35808b2110d32821f6e6c71898ea1739.svg)
![](https://img.xkw.com/dksih/QBM/2021/6/23/2749267531333632/2750537729212416/STEM/f368efe4826e4c8caa102a084a45fe17.png?resizew=37)
∆H<0,反应过程中测得容器内压强的变化如图所示.下列说法正确的是
![](https://img.xkw.com/dksih/QBM/2021/6/23/2749267531333632/2750537729212416/STEM/ee7dda6a-5a11-4f3a-a121-a47d3060233c.png?resizew=336)
![](https://img.xkw.com/dksih/QBM/2021/6/23/2749267531333632/2750537729212416/STEM/a7bcb6370ac54622aed88a040ebd6798.png?resizew=33)
![](https://img.xkw.com/dksih/QBM/2021/6/23/2749267531333632/2750537729212416/STEM/370ba9964a29411aa266014ca21512e6.png?resizew=41)
![](https://img.xkw.com/dksih/QBM/2021/6/23/2749267531333632/2750537729212416/STEM/f368efe4826e4c8caa102a084a45fe17.png?resizew=37)
![](https://img.xkw.com/dksih/QBM/2021/6/23/2749267531333632/2750537729212416/STEM/ee7dda6a-5a11-4f3a-a121-a47d3060233c.png?resizew=336)
A.升高温度可增大反应速率,提高环戊二烯的平衡转化率 |
B.0~20 min内,H2的平均反应速率为 |
C.达到平衡时,环戊烷和环戊二烯的体积分数相同 |
D.平衡常数Kp随反应的进行而减小 |
一定温度下,在容积为2 L的刚性容器中充入1 mol A(g)和2 mol B(g),发生反应A(g)+2B(g)
C(g) ∆H<0,反应过程中测得容器内压强的变化如下图所示。下列说法错误的是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/4/1612cda3-727e-45b2-8058-fb947366dd87.png?resizew=253)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/4/1612cda3-727e-45b2-8058-fb947366dd87.png?resizew=253)
A.0~20 min内,B的平均反应速率为0.025 mol/(L∙min) |
B.达到平衡时,A的转化率为50% |
C.该温度下,反应的压强平衡常数Kp=4.0 MPa-2 |
D.在20 min时,向该容器中充入1 molC(g)达到新平衡,此时C的百分含量增大 |
一定条件下,在容积为2 L的刚性容器中充入1 mol
(g) 和2 mol H2,发生反应
(g)+2H2(g)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.svg)
(g) △H<0,反应过程中测得容器内压强的变化如图所示。下列说法正确的是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/7d4e91bd-7ae6-4b61-9d8b-bb43a569fd9f.png?resizew=243)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/d0cd9020-df27-476f-8609-f6f7753f5716.png?resizew=59)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/2941a49d-4d8a-4190-90bb-ccadf6612058.png?resizew=60)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/cb204cd0-7e39-4d84-b1a7-9bc3b11714b8.png?resizew=59)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/7d4e91bd-7ae6-4b61-9d8b-bb43a569fd9f.png?resizew=243)
A.升高温度可增大反应速率,提高环戊二烯的平衡转化率 |
B.0~20 min内,H2的平均反应速率为0.05 mol/(L·min) |
C.达到平衡时,环戊烷和环戊二烯的体积分数相同 |
D.该温度下平衡常数Kp=4.0 MPa-2 |
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