影响化学平衡移动的因素

影响化学平衡移动的因素

11th Grade

12 Qs

quiz-placeholder

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影响化学平衡移动的因素

影响化学平衡移动的因素

Assessment

Quiz

Chemistry

11th Grade

Medium

Created by

Tan Yean

Used 4+ times

FREE Resource

12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

反应:A(g) + 3B(g) ⇌ 2AB(g)的平衡常数表达式为?

2.

MULTIPLE SELECT QUESTION

1 min • 1 pt

B(g) + C(g) ⇌ 2A(g)

2A(s) ⇌ B(g) + C(g)

2A(aq) + E(s) ⇌ C(g) + B(g)

2A(aq) ⇌ B(g) + C(g)

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

若2NO2(g) ⇌ N2O4(g)的Kc为2,则2N2O4(g) ⇌ 4NO2(g)的Kc为多少?

0.5

2

1/4

4

4.

MULTIPLE SELECT QUESTION

1 min • 1 pt

一定温度下,反应 C(s)+H2O(g) ⇌ CO(g)+H2(g) 在密闭容器中进行,一段时间后达到平衡,下列哪些措施不能使平衡发生移动?

增加C的物质的量

保持容器体积不变,充入He使系统压强增大

将容器的体积缩小一半

保持容器压强不变,充入He使系统体积增大

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

反应:A(g) + B(g) ⇌ C(g), ΔH>0,因什么条件改变,而达到新平衡?

减少A的浓度

增大压强

加入催化剂

降低温度

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

在一定条件下,发生CO(g) + NO2(g)⇌CO2(g) + NO(g)(正反应为放热反应)的反应,达到平衡后,保持体积不变,降低温度,混合气体的颜色变化如何?(提示:NO2红棕色,NO无色)

变浅

变深

不变

无法判断

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

已知化学反应2NO2(g) ⇌ N2O4(g),ΔH=-57 kJ/mol达到平衡。下列哪些方法可以使平衡向左移动?

【I. 减小压强 II. 升高温度 III. 减小系统的体积 IV. 移走一部分NO2气体】

I

I, II, III

I, II, IV

II, III, IV

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