
影响化学平衡移动的因素
Quiz
•
Chemistry
•
11th Grade
•
Medium
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
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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