10分鐘小測:第52章 活化能
Quiz
•
Chemistry
•
9th - 12th Grade
•
Hard
Chemistry Aristo
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
考慮鈉與冷水的反應:
2Na(s) + 2H₂O(l) → 2NaOH(aq) + H₂(g)
如圖中所示,某學生為上述反應繪畫一能線圖。該學生的能線圖中有甚麼錯誤?
(1) 反應物的能級應較生成物的能級低。
(2) 反應所涉及化學物種的物態符號缺少了。
(3) x-軸的標籤應是「反應坐標」。
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某反應在500°C和750°C的速率常數分別是0.113 s⁻¹和0.150 s⁻¹,該反應的活化能是多少?(已知:R = 8.31 J K⁻¹ mol⁻¹)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在一實驗中,測定某反應在不同温度下的速率常數,然後用數據繪製坐標圖。
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
當某反應的温度由300 K增至360 K,它的速率常數增至原來的100倍。該反應的活化能是多少?(已知:R = 8.31 J K⁻¹ mol⁻¹)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
假設某反應的活化能是250 kJ mol⁻¹。若在300 K的速率常數是k₁,在320 K的速率常數是k₂,該反應在320 K較在300 K快多少倍?(已知:R = 8.31 J K⁻¹ mol⁻¹)
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
圖中顯示某氣態反應體系在三個不同的温度下所得的麥克斯韋-波爾茲曼分佈曲線。哪個温度,T₁、T₂抑或T₃,是最低的?
A. T₁
B. T₂
C. T₃
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