
考考你:第41章 濃度和温度的變化對化學平衡的影響
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Chemistry
9th - 12th Grade

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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮以下化學平衡:
2CrO₄²⁻(aq) + 2H⁺(aq) ⇌ Cr₂O₇²⁻(aq) + H₂O(l) ΔH < 0
下列哪些有關這平衡的陳述正確?
(1) 把一些Cr₂O₇²⁻(aq)移去,會使平衡位置向右移。
(2) 加入一些NaOH(aq)會增加CrO₄²⁻(aq)的濃度。
(3) 降低温度會使Cr₂O₇²⁻(aq)的濃度減少。
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在恆温下,下列哪體系會因壓強上升而令平衡位置向生成物的一方移動?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮以下化學平衡:
3O₂(g) ⇌ 2O₃(g) ΔH = +284 kJ mol⁻¹
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮製造甲醇所涉及的以下化學平衡:
CO(g) + 2H₂(g) ⇌ CH₃OH(g) ΔH < 0
下列哪項或哪些改變會使CH₃OH(g)的產率下降?
(1) 從平衡混合物中移去一些CO(g)
(2) 在恆温下增加平衡混合物的壓強
(3) 在恆壓下增加平衡混合物的温度
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮以下平衡體系:
X₂(g) + 3Y₂(g) ⇌ 2XY₃(g)
下列哪些有關這平衡體系的陳述正確?
(1) 它的正向反應是吸熱的。
(2) 温度上升時,平衡位置向右移。
(3) 温度下降時,XY₃(g)的產率下降。
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
哈柏法是用來生產氨的一個工業方法,它使用鐵粉作為催化劑。所涉及反應的方程式顯示如下:
N₂(g) + 3H₂(g) ⇌ 2NH₃(g) ΔH = −92 kJ mol⁻¹
下列哪些改變會增加氨的產率?
(1) 在平衡混合物加入更多鐵粉
(2) 在恆温下提升平衡混合物的壓強
(3) 在恆壓下降低平衡混合物的温度
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