25分鐘測驗:課題十 化學平衡
Quiz
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮圖中的可逆反應。若在恆壓下增加這反應的温度,下列哪項有關這反應的陳述正確?
(1) 混合物的顏色變得較深。
(2) 逆向反應的速率增加。
(3) 氣體的平均分子質量增加。
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮圖中的可逆反應。平衡時,若發現反應混合物含0.00650 mol的N₂、0.00350 mol的Cl₂和0.850 mol的NCl₃,容器的體積是多少?
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
如坐標圖所述,温度和壓強的變化能影響某可逆反應的百分產率。下列哪項可能是這可逆反應?
A. N₂(g) + 3H₂(g) ⇌ 2NH₃(g) ΔH < 0
B. P₄O₁₀(g) + 6PCl₅(g) ⇌ 10POCl₃(g) ΔH < 0
C. 3O₂(g) ⇌ 2O₃(g) ΔH > 0
D. CH₄(g) + H₂O(g) ⇌ CO(g) + 3H₂(g) ΔH > 0
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮在某溶液中建立的平衡體系。下列哪項有關這體系的陳述不正確?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮以下在300 K發生的可逆反應:
N₂(g) + 3H₂(g) ⇌ 2NH₃(g) ΔH = −92 kJ mol⁻¹
已知這反應在300 K的平衡常數是2.7 × 10⁸ mol⁻² dm⁶,哪項或哪些陳述正確?
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
參看圖中資料。以下反應的平衡常數是甚麼?
P(aq) + S(aq) ⇌ T(aq)
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Fe³⁺(aq)與SCN⁻(aq)進行可逆的反應,生成Fe(SCN)²⁺(aq)。把20.0 cm³的0.030 M Fe(NO₃)₃(aq)與10.0 cm³的0.030 M KSCN(aq)混合,可得到一平衡混合物。在該平衡混合物中,Fe(SCN)²⁺(aq)的濃度是多少?
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